Thursday 30 January 2014

General Pediatric MCQs

General Pediatric MCQs


1 - This is a 7/12 old girl presented with fever for 12 hrs duration. The patient started to have the shown abnormalities since 3 hrs, which increase in number & size rapidly. Lumber Puncture done & the analysis result as following: WBC 108, sugar 20 mmol/l & the protein is 180mg. The followings are correct options in the management of this case, except:
a) The child should be Isolated soon
b) I.V fluid should be started soon
c) I.V Antibiotic should be sterted soon
d) Manitol 20% solytion should be started soon
e) Dexamethason should be started soon

2- This is a 3/12 old girl & her radiological study, presented with the shown abnormalities. Her clinical examination reveals a mass in the lower abdomen extended to the pelvis, making the lower border of that mass undefined. The most likely diagnosis is:
a) Urinary bladder neck obstruction
b) Intussuscption
c) Hydrometrocolpos
d) Hydroureter
e) Ovation cysts

3 - This is a radiological study of a 3 - days old boy who presented due to abdominal distension.
The followings are true regarding the most likely radiological diagnosis, except;
a) All patient with this problem should have a suction biopsy
performed to exclude aganglionosis
b) Cystic fibrosis should be consider as an associated disease
c) This radiological procedure can be diagnostic & therapeutic
d) It is associated with maternal hypothyroidism
e) It is associated with maternal Diabetes

4-The is a bone marrow study of an 8 – years old girl who presented with fever & loss of weight since 2/12. Clinical examination reveals pallor, hepatosplenomegaly & lyphadenopathy. The least likely abnormality to be found in her investigation is:
a – Leukocytosis
b – Hyperglobulinemia
c – Thrombcytopenia
d – Elevated hepatic transaminase
e- Non – hemolytic anemia

5- This is a 40/12 old girl presented with the shown abnormality. She was not on any medication.
Apart from the shown abnormality her clinical examination was normal. Her growth pattern was normal for age, sex & mid-parental height. Ultrasound pelvis & abdomen were normal. The relevant initial investigation is:
a- C.T. scan pituitary & hypothalamus
b- Serum 17 - hydroxyprogesterone
c- Serum DHEA
d- Serum prolactin
e- Bone age

6. Disorders associated with the shown abnormalities include all the following except:
a. Bloom syndrome
b. Fanconi Anemia
c. Ataxia telangiectasia
d. Xeroderma pigmentosa
e. Gaucher disease

7– The followings are correct regarding the diagnosis of this infant, Except:
a – Tracheostomy is needed for approximately 1/3rd of these
patients
b - Infants of this condition better to nurse them in the
prone position
c – This condition is inherited as autosomal recessive
d – Usually the normal external morphology of the child occur
at the age of 4 – 6 years
e – Infants with this condition are more liable for upper airway
obstruction

8 – The followings are associated with the underlying diagnosis of this condition , except:
a – Usually preceded by a respiratory infection
b – The left lower part of the organ is commonly
c – Most commonly caused by anaerobic organisms
d – Recurrent episodes indicate abnormality in the
development of that organ
e – Sever systemic manifestations are common

9. This is a 3 days old baby presented only with the shown abnormalities. The followings are true regarding the most likely diagnosis of his condition, except :
a) Remission & relapse of the lesions may occur within hours
b) Treatment is not needed
c) Palms & soles are involved
d) May be associated with papular or vesicular.
e) The lesions contain large number of eosinophiles

10. The followings are known to occur with the most likely diagnosis of this boy, except:
a – Vesico-uretric reflux
b – Maternal oligohydramnios
c – Pulmonary hypoplasia
d – Asplenia or polysplenia
e – Renal dysplasia

11.This is a 7-years old boy presented with the shown abnormalities, with low grad fever, weight loss & abdominal pain. The followings are usual finding in this boy, except:-
a- Symmetrical proximal muscles weakness
b- Elevated muscles enzymes
c- Elevated ESR
d- Dyspigmentation & telengictasia over the shoulder girdle
e- Palmer keratosis

12 - THIS GIRL PRESENTED WITH FEVER FOR THE LAST
3/12. SHE MAY HAVE THE FOLLOWING
CLINICAL ABNORMALITIES, EXCEPT:
a - Decrease mucus in the respiratory tract
b – Decrease mucus in the gastrointestinal tract
c – Positive family history of similar condition
d – Conductive deafness
e – Delayed sexual development

13.The followings may occur in association with the shown abnormality, except:-
a- Cataract
b- Coarctation of the aorta
c- Soft tissue calcification
d- Prolonged QT interval on ECG
e- Low serum calcium with elevated phosphate & alkaline phosphate

14- This is the result of bone marrow study of a 2 – years old boy, Presented due to pallor. The most likely diagnosis is:
a- Iron deficiency Anemia
b- Congenital spherocytosis
c- Congenital elleptocytosis
d- Megaloblastic anemia
e- Pyrovate kinase enzyme deficiency

15- This is a 12 hours old baby has the shown abnormalities. The least likely to be associated with this condition is:
a- Ichthyosiform erythroderma .
b- Lamellar Icthiosis
c- Gaucher disease
d- Ectropion
e- Renal malformation

16- This is a 10 years old boy who is mentally retarded & on anticonvulsant therapy.
The least likely clinical abnormality associated with condition is: -
a- Bony lesions under the shown abnormality
b- Psychological disturbances
c- Cortical thickening of long bones
d- Blood vessel abnormality
e- Scoliosis

17. This girl has the shown abnormalities since 2/12. The followings are true regarding the most likely diagnosis, except.
a. Lesions may appear on the conjunctiva
b. It is a self-limited disease
c. Application of liquid nitrogen is the treatment of choice.
d. Alesion-free period of 4 months can be regarded as cure
e. The causative agent is human papillomavirus

18- This is a chest x – ray & enhanced CT-scan chest for an 8 – years old girl who presented with difficulty in breathing. The most likely diagnosis of this condition is:
a- Cystic Adenomatoid malformation of the lung
b- Hydatit cysts
c- Lung abscess
d- Brochogenic cysts
e- Encysted pleural effusion ( b )

19. Ocular changes which may occur in children with this condition include the followings, except :
a - Nystagmus
b- Refractory errors
c- Cataract
d- Strabismus
e- Lens dislocation

20- The treatment of choice for this disease is:
a- Gene therapy
b- Bone marrow transplantation
c- Androgen therapy
d- Recurrent blood transfusion
e- Regular immunoglobulin therapy + prophylactic antibiotic.

21. This is a radiological study for a n 18/12 old boy who presented with abdominal pain & vomiting. This abnormality may complicate the followings, EXCEPT:
a) Adenovirus otitis media
b) Fecolith
c) Horseshoe kidney
d) Henoch-schonlein purpura
e)Intestinal polyp

22-This is a blood film for 2 years old boy, who presented with pallor. The most likely diagnosis is:
a- Hypersplenism
b- Microangiopathic hemolytic anemia
c- Hemoglobin C disease
d- Sickle cell disease
e- β - Thalassemia

23- This is a 12 - hours old boy has the shown clinical abnormalities. The least likely to be associated with this condition is:
a- Cutis laxa
b- Trisomy - 18
c- Congenital hypothyroidism
d- Immune deficiency syndrome
e- Short limb dwarfism

24- The shown abnormality indicate presence of a disease. The growth of the causative agent
of this disease is resisted by the followings, except:
a- Presence of hemoglobin-S.
b- Lacking Duffy blood group antigen
c- High level of hemoglobin- F
d- Lacking of Rhesus blood group antigen
e- Ovalocyteoses.

25 - THIS IS A 10 YEARS OLD GIRL PRESENTED WITH SHORT STATURE. THE FOLLOWINGS ARE TRUE REGARDING THE LIKELY DIAGNOSIS, EXCEPT:
a – Children with these features may have subnormal I. Q.
b – Congenital heart disease is a known association
c – Children with these features may have normal number
of chromosomes
d – Children with this condition never achieved normal
adult height
e – In these children, normal sexual maturation usually
occur 2 years later than that in normal children

26. THIS BOY PRESENTED WITH THE SHOWN ABNORMALITIES, FOUND TO HAVE ANEAMIA & THROMBOCYTOPENIA. TREATMENT OF THE UNDERLYING CONDITION INCLUDE THE FOLLOWING, EXCEPT:
a – Surgical excision
b – Recombinant IFN – α
c – Chemotherapy (Vincristine / Cyclophosphamide )
d – Systemic steroid
e – Aminocaproic acid

27. An 8 -year’s old girl presented with recurrent abdominal pain & vomiting. Her x – ray abdomen reveal the shown abnormities. The predisposing factor for this condition is:
a – Wilms tumor
b – Intra – abdominal surgery
c – Sickle cell anemia
d – Recurrent urinary tract infection
e – Cysteinuria

28- This is a bone marrow study for this 3 years old boy. The least likely clinical symptom & sign for the most likely diagnosis is:
a- Ataxia
b- Hypertension
c- Sweating & flushing
d- Pulmonary metastasis
e- Bone metastasis

29- This is a 2 - days old baby presented with the shown abnormalities, delivered at term by cesarean section after uneventful pregnancy. This baby may have any of the followings, except:
a- Decrease number of anterior horn cells in the spinal cord
b- The affected muscles are replaced by fat & fibrous tissue
c- Decrease movement in the intrauterine life
d- Congenital heart disease
e- Typically the lower extremities are more affected than the
upper

30- The followings are predisposing factors for the most likely diagnosis of the shown abnormalities except:
a- Meningitis
b- Post traumatic fracture of the skull with scalp laceration.
c- Otitis media
d- Pseudotumor cerebri
e- Cyanotic congenital heart diseases

31- The most likely predisposing factor for this abnormality is:
a- Superior veva cava syndrome
b- Chronic obstructed sleep apnea syndrome
c- Intestinal lymphangectasia
d- Pneumomediastinum
e- Pulmonary Hypoplasia

32. This is a 3 - years old boy, presented with the shown abnormalities. The most likely diagnosis is:
a- 5 α-reductase deficiency
b- Partial testicular feminization syndrome
c- Complete testicular feminization syndrome
d- 21- hybroxylase deficiency
e- Testicular tumor

33- This is an x- ray of a7 year’s old boy presented with painless limping. There was neither
dysmorphic features nor fever or hepatosplenomegaly & he is not receiving any medication. The followings are true regarding the most likely diagnosis, except:
a- Restriction of Abduction of the hip joint
b- Restriction of internal rotation of the hip joint
c- Better prognosis in older children
d- It is a self limited disease
e- Abduction cast may be needed for 18/12

34-This is an 8 - years old boy presented with the shown abnormalities. The followings are true regarding the most likely diagnosis of this condition, except:
a - It is infrequently associated with localized pain,
hyperesthesia & pruritis
b - Resolution usually occurs within 1 – 2/52
c - Chronic granulomatous disease is a predisposing disease
d) Transverse myelitis is a known complication
e) In this case Acyclovire therapy is indicated

35- This boy may have any of the followings, except:
a – Unilateral convulsion
b – Glucoma
c – Hemangioma in the retina
d - Cardiac abnormality
e – Cerebral calcification

36- THE FOLLOWINGS ARE TRUE REGARDING THIS CONDITION, EXCEPT
a – Usually these children have no clinical features at birth
b – In infancy, most joints are hyper extensible except the
extension is restricted at the elbow
c – In infancy, usually there is thoracolumber gibbous
d –Bowing of legs is a common finding after infancy
e – Children with this condition may develop central apnea

37 - THE MOST LIKELY DIAGNOSIS IS:
a – Turner syndrome
b – Alpert syndrome
c – Progeria
d – Apert syndrome
e – Russell - Silver syndrome ( d )

38 -This is a 6 years old girl. She is deaf & mentally retarded. She has similar lesions on the dorsum of both hands & feet, but there are no lesions at rest of the body. The problem started when she was 2 - years old. The most likely diagnosis is:
a) Urticaria pigmentosa
b) Xeroderma pigmentosa
c) Bloom syndrome
d) Incontinancia pigmenti
e) Acrodermatitis enteropathic

39 – THIS IS A 12 DAYS OLD INFANT, PRESENTED ONLY WITH THE SHOWN ABNORMALITY. THE TREATMENT OF THIS CONDITION IS:
a – Ampicillin & gentamycin therapy
b – Incision & drainage
c – Repeated squeezing to express its content
d – No treatment only follows up
e – Surgical excision of the underlying ovarian cyst

40- These are the radiological evaluation for this 8 – years old boy. The followings are correct regarding the underlying disease of this boy, except:-
a- The cause of this disease is deficiency of lysosomal enzymes
b- Usually the symptoms are not apparent at birth
c- Bone marrow transplantation does not corrects the skeletal &
ocular anomalies
d- Urine examination may be helpful in the diagnosis
e- Hypogonadism is known association

41 - This is a radiological study of a one year old girl presented with intermittent vomiting since birth. The most likely diagnosis is:
a – Hirschsprung disease
b - Intestinal obstruction
c – Gastric malrotation
d – Midgut malrotation
e – Midgut duplication

42 - This is a 4/12 old boy presented with the shown abnormality & constipation. He has this problem since the 1st month of life. He had history of neonatal jaundice. Rectal
examination reveal an empty rectum. This is his radiological evaluation. The following are true regarding the most likely diagnosis, except;
a) This is the most common cause of lower intestinal obstruction in
neonates
b) Usually it affects full term infants & it is very unusual in preterms
c) This disease may affect the small intestine alone without
involvement of the colon
d) Radiological evaluation should be done without preparation
e) Clinical symptoms usually present at birth

43- This is an 11/12 old girl presented with the shown abnormalities since birth. Her mother notice that the lesions appear after minor trauma in form of large vesicles or small bollae. Also these lesions became worse in hot weather. Generally, the following are true regarding the most likely diagnosis, except:
a) The condition may be inherited as an autosomal dominant
b) The condition may be inherited as an autosomal recessive
c) It is due to collagen defect
d) Squamoss cell carcinoma is a known complication
e) The gastrointestinal tract is spared

44 -This a 2/12 old girl presented with the shown abnormality. It was noticed by her parents since birth & it is increasing in size. Her clinical examination doesn't reveal any abnormality except this painless cystic lesion. The followings are true regarding the most likely diagnosis,
except:
a) The treatment of choice is surgical excision because it has very
low risk of recurrence & excellent outcome
b) Intra-lesional sclerosing injection is used on treatment
c) Laser therapy is used in treatment
d) Spontaneous regression it may occur
e) Systemic therapy by interferon injection is used in treatment

45- This is a 10 years old boy presented with recurrent abdominal pain, weight loss, malaise, fever, easy fatigability &diarrhea since the last 4/12. Clinical examination reveals the shown
abnormalities. The following are true regarding the most likely diagnosis, except:
a) The disease way involve the colon alone
b) The disease way involve the small bowel alone
c) The stomach & the esophagus are spared
d) Cancer colon is a known complication
e) Renal stones is a known complication

46- This is a 10 years old boy presented with the shown abnormalities & intermittent abdominal pain. The following are tune regarding the most likely diagnosis, except:
a) Hepatosplenomegaly may present in this patient
b) Parcreatitis is a known complication
c) Testicular torsion is a known complication
d) Pulmonary hemorrhage doesn't occur
e) Serum Ig A & Ig M may be elevated

47 - This is a 2 - years old boy who is developmentally delayed. The following are known association for the most likely diagnosis, except:-
a. Microbrachycephaly
b. Micrognathia
c. Defect in T - Cell function
d. Ptosis
e. Pyloric stenosis

48- The least likely to be associated with the most likely diagnosis of this infant is :
a. Mental retardation
b. Hepatoblastoma
c. Adrenal carcinoma
d. Creases on ear lobs
e. Hyperglycemia

49- This is a 9 - years old girl presented with poor weight & height gain. She has anorexia & occasional vomiting& diarrhea. The following are known to be associated with the most likely diagnosis of this condition, except:
a) Megaloblastic anemia
b) More likely to occur in patients with selective Ig A
deficiency
c) Carpopedal spasm
d) Pancreatic function is normal in all children
e) Isolated idiopathic transaminasia without other hepatic
symptom

50- This is a 5/12 old boy presented with the shown abnormalities & fever. The followings are known complications of this disease,except:
a) Glomeriolonephritis
b) Acute rheumatic fever
c) Osteomyelitis
d) Pneumonia
e) Septicemia

Pediatric Hematologist/Oncologist MCQs

Pediatric Hematologist/Oncologist MCQs

1) 7 years old boy presented to ER with history of fever, pallor and nose bleeding, 4 weeks
duration.
On examination: febrile, pale,
hepatosplenomegaly
CBC: WBC 50,000
HB 3 g/dL
Platelet 15,000
Blast 80%
The most likely diagnosis is:
a) B cell ALL
b) T cell ALL
c) Pre B ALL
d) Early pre B ALL
e) Neuroblastoma stage IV

2) 5 years old girl known case of B-thalassemia major. The best test to monitor iron
overload is:
a) Serum ferritin
b) Myocardial iron estimation
c) Urinary iron estimation
d) Liver iron concentration (LIC)
e) Plasma non-transferrin bound iron (NTBI)

3) Five years following successful treatment for acute lymphoblastic leukemia, the parents
report that the patient, who is now 8 year old, is experiencing serious difficulties with
school performance. Areas of particular concern relate to reading, language and
mathematics. What component of ALL therapy would not be a possible cause of
cognitive dysfunction?
a) IT Methotrexate
b) IT Cytarabine
c) Cranial radiation
d) High dose Cyclophosphamide
e) High dose IV Methotrexate

4) A full-term newborn infant is covered with petechiae. Platelet count is 5,000 per mm3.
The remainder of the CBC is normal. The pregnancy, labor and delivery were
uncomplicated, and the mother’s platelet is 370,000 per mm3. What is the correct
management?
a) Intravenous immunoglobulin
b) Platelet transfusion from a random donor
c) Platelet transfusion from the father
d) Cortocosteroids
e) Observation; no drug therapy necessary

5) 2-year-old boy known case of sickle cell disease admitted with severe pallor.
Examination revealed splenomegaly 12 cm/3 cm and HB 2.5 g/dL.
Which statement is correct:
a) Patient should have emergency splenectomy
b) Patient will not have similar attack in the future
c) The incidence of these attack happens in < 10%
d) Patient should be started on hypertransfusion program for a minimum of 3 years
e) All of the above

6) 4-year-old boy presented with right testicular mass. You suspected malignancy. Patient
performed radical archiectomy, the ideal time to repeat ∝ fetoprotein level is
a) 1 day post-operative
b) 5 days post-operative
c) 14 days post-operative
d) 30 days post-operative
e) No need to repeat

7) 4 year old boy known case of hemophilia A coming to ER with first time right side knee
joint swelling in order to control bleeding at the joint, , it is necessary to raise the serum
level of factor VIII to about:
a) 1-2% of normal
b) 5-10% of normal
c) 10-25% of normal
d) 25-50% of normal
e) 75-100% of normal

8) An 18-month-old girl is being evaluated because her mother thinks her abdomen seems
“full.” Physical examination reveals an abdominal mass. Ultrasonography identifies a
solid renal mass. At surgery, a stage I Wilms tumor is found.
The child’s chance of 4-year survival is closest to:
a) 30%
b) 45%
c) 60%
d) 75%
e) 95%

9) Which of the following statements is false regarding Fanconi anemia
a) It is usually macrocytic
b) It is inherited as autosomal recessive
c) Patient will have increased HBF
d) Serum erythropoietin level is decreased
e) Diagnosis is usually made by chromosome breakage analysis

10) In hereditary spherocytosis (HS), which statement is correct?
a) The clinical severity of (HS) parallel the measured quantitative defect in spectrin
b) Diagnosis in the neonatal period is easier than later
c) Mean corpuscular volume (MCV) is decreased
d) Autosomal recessive inheritance
e) Direct Comb’s test (DCt) is important in diagnosis

11) 4 years old girl with the following HB electrophaesis
50% - 80% S
% - 15% F
10% - 30% A
4 % - 6% A2
The diagnosis is
a) SS α thalassemia
b) Sβ° thalassemia
c) SSβ + thalassemia
d) SS disease
e) None of the above

12) Bone marrow transplantation has become an accepted treatment for several diseases
that may be otherwise fatal. The disease in which it is LEAST indicated for the newly
diagnosed patient is
a) Severe combined immune deficiency
b) Chronic myeloid leukemia
c) Severe aplastic anemia
d) Hurler’s disease
e) Acute lymphoblastic leukemia

13) Which statement is correct?
a) Bone is the most common organ affected in Langerhans cell histocytosis
b) Hyperdiploidy in Acute Lymphoblastic Leukemia (ALL) is a bad prognostic factor
c) Hodgkin’s disease is more common than non-Hodgkin’s lymphoma in children
d) 90% of AML children reach induction of remission
e) t (15, 17) is a bad prognostic factor in Acute Myeloid Leukemia (AML)

14) 6 years old boy diagnosed with acute lymphocytic leukemia. All of the following are
true regarding Tumor lysis syndrome except
a) Occurs primarily in patients with bulky β cell or Tcell leukemia
b) High potassium
c) High phosphate
d) High calcium
e) High uric acid

15) Which chromosome may be abnormal in patients with retinoblastoma?
a) 11
b) 13
c) 1
d) 16
e) None of the above

16) Bone marrow aspiration is most likely to confirm the diagnosis in a patient with
which of the following malignancies?
a) Hepatoblastoma
b) Neuroblastoma
c) Retinoblastoma
d) Rhabdomyosarcoma
e) Wilm’s tumor

17) 1 unit of random donor platelets may increase platelet count by about
a) 1,000
b) 7 ,000
c) 20,000
d) 30,000
e) 50,000

18) Partial thromboplastin time (PTT) is a function of all the following except:
a) Factor VIII
b) Factor VII
c) Factor X
d) Factor XI
e) Factor IX

19) All of the following are true regarding Diamond Blackfan anemia (pure red cell
aplasia) except:
a) 90% of cases present < 1 year of age
b) 25% of cases present with congenital anomalies
c) MCV > 90 μm3
d) 70% of patients respond initially to steroids
e) Hemoglobin F (for age) is low

20) All of the following can cause macrocytic anemia except:
a) Liver disease
b) Aplastic anemia
c) Sideroblastic anemia
d) Hypothyroidism
e) Down’s syndrome

Pediatric Rheumatology Multiple Choice Questions (MCQs)

Pediatric Rheumatology Multiple Choice Questions (MCQs)


Read the following statement and answer Q 1‐2


A 12 year old boy presented with multiple firm, painless swellings on the back and lower extremities. He has joints contractures. You have noticed these findings. Inflammatory markers are normal.

1. This boy is prone to have:
A. Atherosclerosis
B. Ankylosis of the large joints of the axial and appendicular skeleton
C. Spondylitis
D. Hypertension
E. Nephropathy

2. The most likely diagnosis is:
A. Juvenile osteopetrosis
B. Osteogenesis Imperfecta
C. Mixed connective tissue disease
D. Congenital Myositis Ossificans
E. Juvenile Dermatomyositis

Read the following statement and answer Q 3‐4


You have been asked to evaluate this newborn baby boy because of this finding. He is a product of fullterm
gestation, C‐section due to fetal distress. His mother is 27‐year‐old who’s known to have
xerophthalmia, xerstomia and enlarged parotid glands. She had history of 2 abortions. She is on long term
treatment of corticosteroids and Methotrexate.

3. The most important organ needs to be examined:
A. Eyes
B. Joints
C. Heart
D. Primitive reflexes
E. Reticuloendothelial system

4. The most appropriate blood test is:
A. Anti‐Histone antibody
B. Erythrocyte sedimentation rate
C. Anti‐Ro/ SSA antibody
D. Anti‐double stranded DNA antibody
E. Lipid profile

Read the following statement and answer Q 5‐6


A 12‐year‐old girl known case of systemic lupus erythematosus was referred to your hospital with this finding.

5. The most relevant laboratory test result is:
A. Leukopenia
B. Prolonged partial thromboplastin time
C. Thrombocytosis
D. Hypoalbuminemia
E. Coomb’s positive hemolytic anemia

6. Accordingly, the most appropriate laboratory test:
A. Antinuclear antibody
B. Anti‐histone antibody
C. Anti‐β 2 glycoprotein I antibody
D. Anti‐double stranded DNA antibody
E. Bleeding time

7. A 10‐year‐old girl presented with this finding. She stated that, it is exacerbated by cold and
associated with tingling and numbness. The correct statement is:
A. Idiopathic Raynaud’s disease is the diagnosis
B. Similar changes can involve the tongue and toes
C. Morphea is the most likely underlying cause
D. High dose of Corticosteroids is the best effective treatment
E. Nifedipine would aggravate her symptoms

8. A 13‐ year old girl presented with shortness of breath and coughing blood. Of the following, the least likely diagnosis is:
A. Wegner’s granulomatosis
B. Microscopic polyangiitis
C. Sarcoidosis
D. Acute serum sickness
E. Idiopathic hemaosidrosis

9. The most commonly affected organ in addition to her lungs is:
A. Heart
B. Joints
C. Kidney
D. Skin
E. Gut

10. This hand‐Xray most probably belongs to a child with:
A. Juvenile idiopathic arthritis
B. Scleroderma
C. Wegner’s granulomatosis
D. Acute Leukemia
E. Ewing sarcoma

11. This X‐ray belongs to a boy who’s most likely have:
A. Abnormal peripheral pulses
B. Hypertension
C. Chronic headache
D. Erosive peripheral arthritis
E. Ataxia

12. Your expectation for this boy is:
A. He is at high risk for chronic arthritis
B. He would have scleroderma‐like skin
C. He would have morning stiffness
D. He would have pulmonary valve stenosis
E. He would complain of intermittent lower limb pain

13. A 5‐year‐old boy presented with history of arthritis and these findings. The most important laboratory test for the diagnosis is:
A. Antinuclear antibody
B. Rheumatoid factor
C. Erythrocyte sedimentation rate
D. Antistreptolysin O antibody
E. Direct coomb’s test

Read the following statement and answer Q 14‐ 15


A 10 year old boy presented with myalgia and hypertension. Skin biopsy from the lesion was consistent with erythema nodosum.

14. Your expectation for this boy is:
A. Presence of fever, night sweats and weight loss are less likely
B. Fixed lung necrotizing pneumonitis is highly expected
C. High polymorph‐nuclear leukocytes counts
D. Thrombocytopenia is a common finding
E. His disease has a self‐limited course

15. The most likely diagnosis is:
A. Henoch‐Schonlein purpura
B. Cogan’s syndrome
C. Sarcoidosis
D. Polyarteritis nodosa
E. Wegener’s granulomatosis

16. A 10 year old girl referred to your hospital with chronic and exacerbations of burning pain in the feet and hands. These episodes are precipitated by heat and dependency. The most likely diagnosis is:
A. Idiopathic Raynaud’s
B. Erythromelalgia
C. Arterial occlusive disease
D. Hand‐foot‐mouth syndrome
E. Systemic sclerosis

17. A 13‐ year old girl referred to your hospital because of hematuria. Three months ago, she had history of nasal blockage associated with mild swelling and pain and she ended with this finding. The incorrect statement is:
A. Churg‐Struss syndrome is one of the differential diagnosis
B. She is at risk to develop lung involvement
C. Abnormal sinus x‐ray
D. ANA is more important than ANCA
E. Renal biopsy is one of the important investigations

18. A 12‐year‐old boy presented with history of chronic arthritis. You would expect to find:
A. Frontal alopecia
B. Sacroiliac joint involvement
C. Bruit over subclavian artery
D. Hypermobile joints
E. Coxa vara

Read the following statement and answer Q 19‐ 20


A 9‐year‐old girl was referred with history of fatigability, arthritis and intermittent fever. Your examination revealed these findings.

19. The correct statement is:
A. Swimming in a sunny day is highly recommended to improve her arthritis
B. Genital ulceration is important finding to confirm the diagnosis
C. Most likely she would develop destructive arthritis
D. She is a candidate for Pneumococcal vaccine
E. The most common cause of morbidity in her case is the migraine headache

20. You would expect her laboratory test result:
A. Low total white cell counts and low lymphocyte counts
B. High white cell counts and high polymorph‐nuclear cell counts
C. Normal ESR and C‐reactive protein
D. High platelet counts
E. High complement levels

Read the following statement and answer Q 21‐ 22


A 10 year old boy referred to your hospital with 3 months history of recurrent painful lesions. Two months ago he developed these lesions on his lower extremity. He gave a history of sagital sinus thrombosis 6 months ago.

21. The most likely diagnosis is:
A. Reiter’s syndrome
B. Systemic lupus erythematosus
C. Steven Johnson syndrome
D. Behcet’s disease
E. Histocytosis X

22. The most important organ needs to be examined:
A. Eyes
B. Joints
C. Gut
D. Liver
E. Heart

Read the following statement and answer Q 23‐ 24


A 7 year old girl presented with history of high spiking. The temperature rises to 39C and higher on daily or twice‐daily basis, with rapid return to baseline or below the baseline. Mother noticed that fever is almost always accompanied by this rash.

23. This rash is known as:
A. Erythema marginatum
B. Livedo reticularis
C. Salmon pink rash
D. Erythema nodosum
E. Psoriasis

24. Most likely she will have the following:
A. Prolonged PR interval
B. High white cell counts with high polymorph‐nuclear cell counts
C. Low C‐reactive protein
D. High IgM level for B. burgdorferi
E. Urine RBC casts

Read the following statement and answer Q 25‐ 27


A 6 year old boy presented with 2 months history of fatigability, recurrent severe abdominal pain and this finding.

25. The most likely diagnosis is:
A. Psoriasis
B. Behcet disease
C. Systemic lupus erythematosus
D. Juvenile dermatomyositis
E. Steven Johnson syndrome

26. The most appropriate imaging study for this boy is:
A. Skeletal survey
B. Bone scan
C. Abdominal ultrasound
D. MRI of the pelvic girdle
E. Brain CT scan

27. One of the potential complications is:
A. Cardiomyopathy
B. Encephalopathy
C. Interstitial nephritis
D. Subcutaneous swellings
E. Deafness

28. The examination of the periungual skin showed this finding. The correct statement is:
A. It is normal finding
B. It is a sing of bleeding tendency
C. Most probably the patient has muscle weakness
D. You need to consult dermatologist for possible skin biopsy
E. Lower GI‐endoscopy is badly needed

Read the following statement and answer Q 29‐ 30


A 9 year old boy, who was completely healthy, presented with 4 months history of back pain. The pain is progressive and severe. Currently, he is unable to walk

29. You would like to clarify the following:
A. History of fever.
B. History of gastrointestinal bleeding.
C. History of abnormal movements.
D. History of muscle weakness.
E. History of skin rash.

30. The most likely working diagnosis is:
A. Ewing sarcoma.
B. Osteomeyelitis.
C. Fracture
D. Eosinophilic granuloma
E. Lymphoma

Read the following statement and answer Q 31‐ 33


You have been asked to evaluate this young boy, who’s presented with 8 days history of high grade fever and maculopapular skin rash. He was treated with oral antibiotic with poor response.

31. The important laboratory test is:
A. Antinuclear antibody
B. Antistreptolysin O antibody
C. Complement level
D. Serum albumin
E. Urine culture

32 Your treatment choice is:
A. Broad spectrum antibiotic intravenously to complete 10 days
B. Stop antibiotic and wait till he complete 10 days of his disease course
C. High dose of IVIG
D. High dose of IVIG and Corticosteroids.
E. High doses of IVIG and acetylsalicylic acid

33. This patient is at risk of developing:
A. Transient Uveitis
B. Septic meningitis
C. Autoimmune hepatitis
D. Proliferative glomerulonephritis
E. Endocarditis

34. An 11‐year‐old girl who’s healthy apart from intermittent lower limb pain. Your expectation is:
A. She would have elevated muscle enzymes
B. She would have abnormal bone scan
C. She is at high risk for leg length discrepancy
D. Hard insoles would relief her symptoms
E. She would have poor outcome

Read the following statement and answer Q 35‐ 36


This patient presented with this finding and history of right knee pain and swelling, 3 weeks later developed left ankle pain.

35. These findings are consistent with:
A. Henoch‐Schonlein purpura
B. Psoriatic arthritis
C. Psoriasis
D. Juvenile dermatomyositis
E. Fungal infection

36. This patient is at risk of:
A. Interstitial nephritis
B. Uveitis
C. Interstitial pneumonitis
D. Calcinosis
E. Thrombosis

37. A young boy presented with recurrent headache and high blood pressure. Work up showed this finding. You would expect that he has the following:
A. Normal renal function
B. Low ESR
C. Abnormal peripheral pulses
D. Symmetrical arthritis
E. Scleroderma‐like skin

Read the following statement and answer Q 38‐ 39


38. You have been asked to evaluate this patient who’s known to have poly‐articular juvenile idiopathic arthritis. He is on treatment. You would expect that this complication is due to:
A. The primary disease
B. High dose of corticosteroids
C. Methotrexate
D. Naproxen
E. Poor nutrition

39. This patient is expected to receive:
A. Colchicine
B. Folic acid
C. Kenalog in Orabase
D. Topical antibiotic
E. Xylocaine gel

40. The following is true about acute rheumatic fever:
A. It is the classical example of reactive arthritis
B. The second common cause of acquired heart disease in the developing countries
C. It is almost always associated with erosive arthritis
D. Scarlet fever is not enough evidence for streptococcal infection
E. The American heart association recommendation is to give long acting penicillin injection
every 3 months instead of 4 months

GENETICS MCQs

GENETICS MCQs


1- A four-year-old boy came to your clinic with a history of seizures and
developmental delay. When you examined him you found that he was short
and has huge liver. The most likely diagnosis among the following conditions
is:
a. Pompe disease
b. Glycogen storage disease type I
c. Tyrosinemia type II
d. Phenylketonuria
e. Morquio syndrome

2- The parents of a 3-year-old boy were very concerned about their child's
cognitive ability. They also reported that he had abnormal behavior. However,
the child has never been admitted to the hospital. You sent a blood sample for
tandem mass spectrometry and the result was abnormal. Which of the
following therapeutic intervention is the best approach:
a. Dietary restriction
b. L-carnitine
c. Vitamin B12 injection
d. Enzyme replacement therapy
e. Sodium benzoate

3- The nursery called you to examine a newborn baby because of Down
syndrome features. Which of the following statements is true about this
syndrome?
a. Aneuploidy is the most common chromosomal finding
b. Nondisjunction occurs during mitosis in most cases
c. The meiotic error occurs in paternal gametes
d. Maternal serum testing is not a good prenatal screening method for
Down syndrome
e. Translocation Down syndrome is a milder form

4- Which one of the following diseases is included in the Saudi National
Newborn Screening Program:
a. Nonketotic hyperglycinemia
b. Zellweger syndrome
c. Biotinidase deficiency
d. Tyrosinemia
e. Very long chain acyl CoA dehydrogenase deficiency (VLCAD)

5- A two-year-old girl was referred to you for evaluation of wide wrests. She was
also noticed to have hepatomegaly. Her routine investigations revealed that
she had metabolic acidosis. The diagnostic testing for this condition is:
a. Urine analysis
b. Blood tandem MS
c. Bone profile
d. X-ray wrest
e. Blood gases

6- You have evaluated a 10-year-old boy with learning disability. The mother
told you that her sister had learning problems too. When you reviewed the
chart, you found an abnormal result of a triplet repeat expansion test. The most
likely diagnosis is:
a. Sotos syndrome
b. Fargile X syndrome
c. Beckwith-Wiedemann syndrome
d. Simpson-Golabi syndrome
e. Seckel syndrome

7- You were covering the NICU when you received a call from the emergency
room physician telling you that he had just intubated a 10 day old neonate who
came in coma. When you got inside the room you were struck by a very
unusual smell. His mother told you that he was well until three days ago. She
also mentioned that she had a girl who died at one month of age of unknown
cause. After examining the baby, you quickly reviewed his CBC, blood gases,
and ammonia and all were normal. The best course of action is :
a. Wait for tandem MS result
b. Start antibiotic and observe for any improvement
c. Send urine sample for urgent organic acid analysis
d. Immediate dialysis
e. CSF analysis for glycine.

8- At a given locus, both parents have (Aa) genotype for a recessive trait. The
proportions of the genotypes in their children will be:
a. 1 AA: 2 Aa: 1 aa
b. 2 AA: 1 Aa: 1 aa
c. 1 AA: 1 Aa: 2 aa
d. 1 AA: 1 Aa: 1 aa
e. 2 AA: 2 Aa : 2 aa

9- A psychiatrist referred a 12-year-old boy to your clinic. You found that he had
been seen by ophthalmology too. On examination, you noticed that he was tall
and thin and had scoliosis. Which one of the following is a true statement
about this disorder?
a. Urine organic acid analysis is the best diagnostic approach
b. Tandem MS will show highly elevated amino acid
c. Some patients are vitamin B1 responsive
d. The inheritance pattern is mitochondrial
e. The disorder is included in the Saudi National Newborn Screening
Program

10- The National Laboratory for Newborn Screening notified you that your one
week patient has abnormal tandem MS with highly elevated
propionylcarnitine. The most likely diagnosis is:
a. Fatty acid oxidation defect
b. MSUD
c. Methylmalonic acidemia
d. Homocystinuria
e. Isovaleric acidemia

11- In X-linked recessive pedigrees:
a. Male to male transmission is characteristic
b. Males and females are equally affected
c. For an affected male, all his sons will be normal and all his daughters
will be affected
d. For a carrier mother, 25% of her sons will be normal
e. Heterozygous females may express the disease because of skewing X
inactivation

12- The mother of a 2-day-old boy brought him to the emergency room because of
poor feeding and vomiting. His CBC and serum electrolytes were normal.
Ammonia was 430 uM. What is the most appropriate test that you would
request?
a. Liver function tests
b. Blood gases
c. Plasma amino acids
d. Urine succinylacetone
e. Blood carnitine level

13- You intubated a 2-day old baby because of recurrent attacks of apnea and
seizures. You suspected a metabolic disorder, however tandem MS was
unremarkable. Among the following conditions, the most likely diagnosis is:
a. Nonketotic hyperglycinemuia
b. Propionic acidemia
c. MSUD
d. Argininosucsinic acidemia
e. Methylmalonic acidemia

14- There are about 3 billion bases in human DNA. Approximately what percent
of these bases actually code for genes?
a. 100%
b. 70-80%
c. 30-50%
d. 15-20%
e. 1-2%

15- You are assessing a neonate who presented to the emergency room with severe
metabolic acidosis. Urine analysis showed massive ketosis. Which of the
following medications you need to prescribe for the patient?
a. Arginine
b. Sodium benzoate
c. Sodium phenylbutyrate
d. Vitamin B12
e. Vitamin B6

16- In a child with deafness and alopecia, the laboratory work up reveals that he
has lactic acidosis. The most likely diagnosis is :
a. Ectodermal dysplasia
b. MELAS
c. Biotinidase deficiency
d. Vitamin D resistant rickets
e. Glycogen storage disease

17- Enzyme replacement therapy is available to which of the following metabolic
disorders:
a. Niemann-Pick disease
b. Maroteaux-Lamy syndrome
c. Phenylketonuria
d. Biotinidase deficiency
e. Glycogen storage disease type I

18- The NICU nurse informed you that she was not able to insert a nasogastric
tube for one of the babies who has congenital heart disease. When you
examined him, you detected a defect in the iris. What is the pattern of
inheritance of this condition?
a. X-linked recessive
b. Autosomal recessive
c. Mitochondrial
d. Multifactorial
e. Autosoaml dominant

19- How many conditions does the Saudi National Newborn Screening Program
screen for?
a. 6
b. 10
c. 16
d. 29
e. 2

20- You examined a 15-month-old boy who had developmental delay. You
noticed hypotonia and huge liver and spleen. When you reviewed his chart,
you found that had normal tandem MS, urine organic acid analysis, and lactic
acid. However, he had a bone marrow examination which was abnormal. Of
the following, what is the most appropriate diagnostic test?
a. Liver biopsy for histochemical staining
b. Nerve conduction velocity
c. Skin biopsy for enzyme assay
d. Echocardiogram
e. Muscle biopsy

21- While you are on call for the NICU, the chemistry laboratory calls you for an
abnormal ammonia level on 5-day-old neonate who is on mechanical
ventilation. The most appropriate treatment is:
a. Peritoneal dialysis
b. IV carnitine
c. PO sodium benzoate
d. Keep NPO
e. High dextrose in the IVF

22- Which of the following statement is true?
a. Lisch nodules are one of the diagnostic criteria for neurofibromatosis II
(NF II)
b. Bilateral acoustic neuromas are distinctive features of tuberous
sclerosis
c. Unilateral nevus involves the upper half of the face in Sturge-Weber
syndrome
d. Both parents are typically affected in children with neurofibromatosis I
e. The father of a girl with incontinenta pigmenti is usually affected

23- When you examined a one-year-old girl with developmental delay, you found
severe hypotonia and optic atrophy. She also had macrocephaly. The preferred
biochemical test is:
a. Urine organic acid
b. Tandem MS
c. Plasma amino acid
d. Hexosaminidase A level
e. VLCFA level

24- An apparently healthy neonate has abnormal newborn screening. The parents
tell you that they had another infant who was perfectly well before his sudden
death. Of the following, what is the most likely diagnosis:
a. CPS deficiency
b. Propionic acidemia
c. Medium chain acyl CoA dehydrogenase (MCAD) deficiency
d. Long QT syndrome
e. Autosomal recessive cardiomyopathy

25- A newborn baby developed convulsion. When you examined her, you detected
an abdominal wall defect. Of the following, the most likely diagnosis is?
a. Trisomy 18
b. Beckwith-Wiedmann syndrome
c. Trisomy 13
d. Zellweger syndrome
e. Cri-du chat syndrome

26- A newborn baby was found to have high forehead, epicanthal folds, and
profound hypotonia. His consanguineous parents informed you that they had
an infant who died at the age of 4 months with similar problem. The
biochemical defect is likely to be found in which of the following organelles?
a. Mitochondria
b. Golgi apparatus
c. Peroxisomes
d. Ribosomes
e. Lysosomes

27- Which of the following metabolic disorder/treatment matching is appropriate?
a. Homocystinuria and vitamin B6
b. MSUD and carnitine
c. Propionic acidemia and Coenzyme Q10
d. Biotinidase deficiency and riboflavin
e. Zellweger syndrome and fat restriction

28- Nonsyndromic deafness is characterized by:
a. Locus heterogeneity
b. A defect in one gene that causes the vast majority of cases
c. Mitochondrial inheritance in most families
d. Mental retardation
e. Blindness

29- You were consulted on a child with a metabolic disorder to provide your
opinion whether he is a candidate for bone marrow transplantation. In which
of the following diseases you would consider this treatment option?
a. Sanfilippo syndrome
b. X-linked adrenoleukodystrophy
c. Morquio syndrome
d. Neonatal adrenoleukodystrophy
e. VLCAD

30- A 2 year old girl presented with hepatosplenomegaly and developmental
delay. Her eye exam revealed cherry red macula. Of the following, what is the
most likely diagnosis?
a. Hurler syndrome
b. Krabbe disease
c. Glycogen storage disease
d. Tay-Sachs disease
e. Sandhoff disease

31- The mother of a one-month-old baby was concerned about yellowish
discoloration of his eyes and skin. You suspected a metabolic disorder. You
send urine analysis which was positive for reducing substances, however,
tandem MS was normal. Which of the following statement is true?
a. Tandem MS was normal because this particular disorder is not
included in the National Newborn Screening Program
b. Enzyme assay is the diagnostic test
c. The disorder does not cause cognitive delay
d. The jaundice is likely due to unconjugated hyperbilirubinemia
e. Cataract cannot be seen in the first week of life

32- Which of the following statements about sex chromosomes anomalies is true?
a. Turner syndrome is a euploidy disorder
b. 45, X is rarely found in spontaneous abortion
c. Patients with Klinefelter syndrome are usually fertile
d. 47, XXY males are typically mentally retarded
e. 47, XYY males may have behavioral problems

33- Which of the following statements is true in cases with mitochondrial
disorders?
a. Normal lactate excludes mitochondrial defect
b. Neuromuscular manifestations are very unusual
c. Variability in clinical presentation is characteristic
d. All mitochondrial disorders have mitochondrial pattern of inheritance
e. Deafness is rarely seen in patients with mitochondrial disorders

34- Which of the following statements is true?
a. Homocystinuria causes upward lens dislocation
b. Biotinidase deficiency is an incurable disease
c. Neuronal ceroid lipofuscinosis is a common white matter
neurodegenerative disease
d. Endotracheal intubation is risky in patients with MPS
e. CSF analysis is not essential to diagnose nonketotic hyperglycinemia

35- Which of the following diseases is inherited as autosomal dominant?
a. Ataxia telangiectasia
b. MELAS
c. Hunter syndrome
d. PKU
e. Familial hypercholesterolemia

36- 12-year-old boy was evaluated by cardiology for supravalvualr aortic stenosis.
The parents report that he is at special school but has a very friendly
personality. The most likely diagnosis is :
a. Prader-Willi syndrome
b. Fragile X syndrome
c. Williams syndrome
d. Angelman syndrome
e. Down syndrome

37- One of your neighbor's children has achondroplasia. Which of the following
features is true about this disease?
a. The parents of children with achonroplasia are short in most cases.
b. Mental retardation is observed in most patients
c. Quadriparesis is a known complication
d. In an affected child, the FGFR3 mutation is inherited form one of the
parents in most cases.
e. The trunk is short while the limbs are normal.

38- Which of the following statement is true?
a. Osteogenesis imperfecta is clinically homogenous
b. Crouzon syndrome causes severe syndactyly
c. Trisomy 18 is inherited form one of the parents
d. Mosaicism describes individuals with two different cell lines derived
from two zygotes
e. Malignancy is a well-known association with Fanconi anemia

39- Which of the following syndrome/feature matching is true?
a. Cri-du-chat deletion of chromosome 4
b. Alagille syndrome posterior embryotoxin
c. Parder-Willi syndrome deletion of the maternal 15q11
d. DiGeorge syndrome hypercalcemia
e. William syndrome hypocalemia

40- Which of the following is true about multifactorial disorders?
a. Genes play no role in their causation
b. In most cases of cancer, somatic and not germline gene defect is
detected
c. The risk of recurrence for another affected child is 25%
d. Presentation in adulthood is rare
e. No sex predilection is observed.

41- The parents of a 3 year old girl came to your clinic to evaluate their daughter
because she had been loosing her developmental skills. You noticed that she
had stereotypic hand movements. Which of the following is true about this
disease?
a. Males are commonly affected
b. It is inherited as X-linked recessive
c. Children are typically affected before 6 months of age
d. A gene has been identified to cause this disease
e. An affected child commonly inherits the mutation from her

Biochemistry MCQs with ANSWERS

BIOCHEMISTRY MCQs with Answers


1. A drug which prevents uric acid synthesis by inhibiting the enzyme xanthine oxidase is
(A)  Aspirin
(B)  Allopurinol
(C) Colchicine
(D) Probenecid

2. Which of the following is required for crystallization and storage of the hormone insulin?
(A)  Mn++
(B)  Mg++
(C) Ca++
(D) Zn++

3. Oxidation of which substance in the body yields the most calories
(A)  Glucose
(B)  Glycogen
(C) Protein
(D) Lipids

4. Milk is deficient in which vitamins?
(A)  Vitamin C
(B)  Vitamin A
(C) Vitamin B2
(D) Vitamin K

5. Milk is deficient of which mineral?
(A)  Phosphorus
(B)  Sodium
(C) Iron
(D) Potassium

6. Synthesis of prostaglandinsis is inhibited by
(A)  Aspirin
(B)  Arsenic
(C) Fluoride
(D) Cyanide

7. HDL is synthesized and secreted from
(A)  Pancreas
(B)  Liver
(C) Kidney
(D) Muscle

8. Which are the cholesterol esters that enter cells through the receptor-mediated endocytosis of lipoproteins hydrolyzed?
(A)  Endoplasmin reticulum
(B)  Lysosomes
(C) Plasma membrane receptor
(D) Mitochondria

9. Which of the following phospholipids is
localized to a greater extent in the outer
leaflet of the membrane lipid bilayer?
(A)  Choline phosphoglycerides
(B)  Ethanolamine phosphoglycerides
(C) Inositol phosphoglycerides
(D) Serine phosphoglycerides

10. All the following processes occur rapidly in the membrane lipid bilayer except
(A)  Flexing of fatty acyl chains
(B)  Lateral diffusion of phospholipids
(C) Transbilayer diffusion of phopholipids
(D) Rotation of phospholipids around their long axes

11. Which of the following statement is correct about membrane cholesterol?
(A)   The hydroxyl group is located near the centre of the lipid layer
(A)   Most of the cholesterol is in the form of a
(B)   cholesterol ester
(C)   The steroid nucleus form forms a rigid, planar
(D)  Structure into the extracellular fluid

12. Which one is the heaviest particulate component of the cell?
(A)   Nucleus (B) Mitochondria
(B)   Cytoplasm (D) Golgi apparatus

13. Which one is the largest particulate of the cytoplasm?
(A)   Lysosomes
(B)   Mitochondria
(C)   Golgi apparatus
(D)  Entoplasmic reticulum

14. The degradative Processess are categorized under the heading of
(A)   Anabolism (B) Catabolism
(B)   Metabolism (D) None of the above

15. The exchange of material takes place
(A)   Only by diffusion
(B)   Only by active transport
(C)   Only by pinocytosis
(D)  All of these

16. The average pH of Urine is
(A)   7.0 (B) 6.0
(B)   8.0 (D) 0.0

17. The pH of blood is 7.4 when the ratio between H2CO3 and NaHCO3 is
(A)   1 : 10 (B) 1 : 20
(B)   1 : 25 (C) 1 : 30

18. The phenomenon of osmosis is opposite to that of
(A)   Diffusion (B) Effusion
(B)   Affusion (D) Coagulation

19. The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by
(A)   Bile Salts (B) Bile acids
(B)   Conc. H2SO4 (D) Acetic acid

20. Which of the following is located in the mitochondria?
(A)   Cytochrome oxidase
(B)   Succinate dehydrogenase
(C)   Dihydrolipoyl dehydrogenase
(D)  All of these
21. The most active site of protein synthesis is the
(A)   Nucleus (B) Ribosome
(B)   Mitochondrion (D) Cell sap

22. The fatty acids can be transported into and out of mitochondria through
(A)   Active transport
(B)   Facilitated transfer
(C)   Non-facilitated transfer
(D)  None of these

23. Mitochondrial DNA is
(A)   Circular double stranded
(B)   Circular single stranded
(C)   Linear double helix
(D)  None of these

24. The absorption of intact protein from the gut in the foetal and newborn animals takes place by
(A)   Pinocytosis (B) Passive diffusion
(B)   Simple diffusion (D) Active transport

25. The cellular organelles called “suicide bags” are
(A)   Lysosomes (B) Ribosomes
(B)   Nucleolus (D) Golgi’s bodies

26. From the biological viewpoint, solutions can be grouped into
(A)   Isotonic solution
(B)   Hypotonic solutions
(C)   Hypertonic solution
(D)  All of these

27. Bulk transport across cell membrane is accomplished by
(A)   Phagocytosis (B) Pinocytosis
(B)   Extrusion (D) All of these

28. The ability of the cell membrane to act as a selective barrier depends upon
(A)   The lipid composition of the membrane
(B)   The pores which allows small molecules
(C)   The special mediated transport systems
(D)  All of these

29. Carrier protein can
(A)   Transport only one substance
(B)   Transport more than one substance
(C)   Exchange one substance to another
(D)  Perform all of these functions

30. A lipid bilayer is permeable to
(A)   Urea (B) Fructose
(B)   Glucose (D) Potassium

31. The Golgi complex
(A)   Synthesizes proteins
(B)   Produces ATP
(C)   Provides a pathway for transporting chemicals
(D)  Forms glycoproteins

32. The following points about microfilaments are true except
(A)   They form cytoskeleton with microtubules
(B)   They provide support and shape
(C)   They form intracellular conducting channels
(D)  They are involved in muscle cell contraction


33. The following substances are cell inclusions except
(A)   Melanin (B) Glycogen
(B)   Lipids (D) Centrosome

34. Fatty acids can be transported into and out of cell membrane by
(A)   Active transport (B) Facilitated transport
(B)   Diffusion (D) Osmosis

35. Enzymes catalyzing electron transport are present mainly in the
(A)   Ribosomes
(B)   Endoplasmic reticulum
(C)   Lysosomes
(D)  Inner mitochondrial membrane

36. Mature erythrocytes do not contain
(A)   Glycolytic enzymes(B) HMP shunt enzymes
(B)   Pyridine nucleotide(D) ATP

37. In mammalian cells rRNA is produced mainly in the
(A)   Endoplasmic reticulum
(B)   Ribosome
(C)   Nucleolus
(D)  Nucleus

38. Genetic information of nuclear DNA is transmitted to the site of protein synthesis by
(A)   rRNA (B) mRNA
(B)   tRNA (D) Polysomes

39. The power house of the cell is
(A)   Nucleus (B) Cell membrane
(B)   Mitochondria (D) Lysosomes

40. The digestive enzymes of cellular compounds are confined to
(A)   Lysosomes (B) Ribosomes
(B)   Peroxisomes (D) Polysomes
ANSWERS
1. B 2. D 3. D 4. A 5. C 6. A
7. B 8. B 9. A 10. C 11. C 12. A
13. B 14. B 15. D 16. B 17. B 18. A
19. A 20. D 21. B 22. B 23. A 24. A
25. A 26. D 27. D 28. D 29. D 30. A
31. D 32. C 33. D 34. B 35. D 36. C

37. C 38. D 39. C 40. A