Download SSUHS MBBS First Year Biochemistry Paper I 2019 June Question Paper

SS/MBBS/BIO-I/6-19
First Professional MBBS Examination
2019
(June)
BIOCHEMISTRY

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Paper-I
Full Marks: 50
Time: 2 hours
The figures in the margin indicate
full marks for the questions

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Write the answers to the two Halves in separate books
Answer all questions

FIRST HALF
1. What are the forces that stabilize primary, secondary and tertiary structures

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of proteins? Explain the structural organization of hemoglobin molecule, and
the effect of alteration in amino acid sequence. [ 2 + 3 + 3 = 8]
2. Write short notes on any three of the following : 4?3=12
(a) Cell membrane active transport mechanism
(b) Transamination reaction and its metabolic importance

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(c) Biological role of vitamin B12
(d) Carnitine
3. Explain in short : 2?2=5
(a) Deficiency of lipotropic factors may result in fatty liver

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(b) Newborn infants are at high risk of vitamin K deficiency

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SECOND HALF
4. Describe in brief human body distribution and biological functions of
calcium. Give a note on calcium homeostasis. 4+4=8
5. Write short notes on any three of the following : 4?3=12
(a) Free radicals in human diseases

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(b) Plasma bicarbonate buffer
(c) Competitive enzyme inhibition
(d) Diet as risk factors of atherosclerosis
6. Explain in short : 2?2=5
(a) Presence of bile salts and bile pigments in urine indicates obstructive

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jaundice
(b) Severe deficiency of copper leads to hypochromic and microcytic anemia
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SM9--1120/23 SS/MBBS/BIO-1/6-19

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