Download MBBS 1st Year (First Year) 2023 March 526055 Biochemistry Paper I Supplementary Cbme MCQs Previous Question Paper || MGR University | MBBS Latest 2024 Previous Year Question MCQs Papers
[MBBS 0323] MARCH 2023 Sub. Code : 6055
M.B.B.S. DEGREE EXAMINATION
(For the candidates admitted from the Academic Year 2019-2020)
FIRST YEAR ? SUPPLEMENTARY (CBME)
PAPER I ? BIOCHEMISTRY
Q.P. Code: 526055
Time: 30 Minutes
Maximum : 20 Marks
Answer All Questions
Choose one correct answer in the box provided in the Answer Script. No
overwriting should be done. Choice should be given in Capital Letters.
III. Multiple Choice Questions:
(20 x 1 = 20)
1. All of the following are aldoses except:
A) Glucose B) Ribose C) Galactose D) Ribulose
2. The Glycosaminoglycan without any sulphate conjugation is
A) Dermatan sulphate B) Keratan sulphate C) Hyaluronic acid D) Heparin
3. Dipalmitoyl Phosphatidyl choline is an example of
A) Lecithin B) Plasmalogen C) Cardiolipin D) Cephalin
4. The marker enzyme of lysosome is
A) Lactate dehydrogenase B) Cathepsin
C) Galactosyl transferase D) Glucose - 6 ? phosphatase
5. A three-month-old child exclusively on breast feeds presented with incessant crying, poor
weight gain. Clinical examination revealed enlarged liver, cataract and positive
Benedict's test of the urine. The most likely condition is
A) Von Gierke's Disease B) McArdle's Disease
C) Galactosemia D) Lactose intolerance
6. The apoprotein which activates Lipoprotein lipase is:
A) Apo B48 B) Apo B100 C) Apo CII D) Apo A1
7. True regarding chylomicron are all except:
A) HDL is involved in activation of chylomicron
B) Lipoprotein Lipase helps in the conversion of chylomicron to chylomicron
remnant
C) Chylomicron remnant reaches the extrahepatic tissues
D) Chylomicron reaches the extrahepatic tissues
8. A 15 year old child presents with repeated episode of pancreatitis. Serum triglyceride
concentration is 1100mg/dL, Cholesterol is 250mg/dL. Lipoprotein lipase activity is low.
The diagnosis is:
A) Type I hyperlipoproteinemia B) Type II hyperlipoproteinemia
C) Type III hyperlipoproteinemia D) Type IV hyperlipoproteinemia
9. The mucopolysaccharide present in the glomerular basement membrane is:
A) Heparan sulphate B) Keratan sulphate
C) Hyaluronic acid D) Chondroitin sulphate
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10. All of the following cells are dependent on glycolysis except?
A) Neurons B) RBC C) Renal medulla D) Red muscle fibres
11. Glucose enters into skeletal muscle by:
A) Simple passive diffusion B) Facilitated passive diffusion
C) Primary active transport D) Secondary active transport
12. The significance of Rappaport Leubering Shunt is:
A) ATP production B) Lactate formation
C) Source of fatty acid D) 2, 3 BPG production
13. All the following causes shift of oxyhemoglobin dissociation curve to right except
A) Increase in body temperature B) 2, 3 BPG
C) Alkalosis D) Acclimatisation
14. A mutation in complex II of the ETC will cause impairment of electron transfer from
which of the following substrates?
A) -Ketoglutarate B) Isocitrate C) Succinate D) Pyruvate
15. Which one of the following statements concerning vitamin B12 is correct?
A) The cofactor form is vitamin B12 itself
B) It is involved in the transfer of amino groups
C) It requires a specific glycoprotein for its absorption
D) It is present in plant products
16. A 30-year-old man goes to his dentist complaining of loosening teeth. Examination also
reveals his gums are swollen, purple, spongy and multiple splinter haemorrhages near the
distal ends of the finger nails and that a wound on the patient's forearm has failed to heal
properly. Which of the following vitamins is most likely to be deficient in this patient?
A) Ascorbic acid (vitamin C) B) Biotin
C) Cobalamin (vitamin B12) D) Riboflavin (vitamin B2)
17. Prior to a race, many marathon runners will try to increase their glycogen concentrations
by loading up with foods with high starch content, such as pasta. - Amylase secreted by
the pancreas will digest the starch into which of the following major products?
A) Amylose, amylopectin, and maltose B) Glucose, galactose, and fructose
C) Limit dextrins, maltose, and maltotriose D) Limit dextrins, lactose, and sucrose
18. Enzymes act by reducing the
A) Activation energy B) Binding energy C) Heat energy D) All the above
19. Iron sulphur proteins are components of
A) Citric acid cycle B) ATP synthase C) Beta- oxidation D) Respiratory chain
20. Tay-Sachs disease involves the metabolism of gangliosides. Gangliosides are composed
of a ceramide backbone with at least which one of the following?
A) Phosphorylated sugar residue B) Glucose residue
C) Galactose residue D) Sialic acid residue.
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[MBBS 0323]
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