Madhya Pradesh Medical Science University,
Jabalpur
MBBS First Professional Examination 2015
Subject- Biochemistry
Paper-I

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(NEW SCHEME)
Time: 3 Hours
Maximum Marks:50
) All questions are compulsory
b) Draw diagrams wherever necessary

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c) Answers of Questions and Sub-questions must be
written strictly according to serial order of question paper.
d) Do not write anything on the blank portion of question
paper, if written anything such type of act will be
considered as an attempt to resort to unfair means

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Q1. Long Answer questions ? 10 MARKS
a. Enumerate sources of vitamin D, describe its
biosynthesis and explain why vitamin D is called hormone
5
b. Explain the pathway of glycogen synthesis and

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glycogenolysis. In short explain role of branching and de-
branching enzymes 5
Q2. Short Answer Questions ? 30 MARKS
a. Endoplasmic reticulum 3
b. Fluid mosaic model of biological membrane 3

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c. Electrophoresis 3
d. Selenocysteine 3
e. Na+-K+ pump 3
f. Cytochrome p450 3
g. Inhibitors of electron transport chain 3

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h. Biosynthesis of thyroxine 3
i. Isoenzymes 3
j. Tyrosinemia 3
Q3. Very Short Answer Questions ? 10
MARKS

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a. Enumerate mechanisms of enzymes action 1
b. Enumerate functions of glutathione 1
c. Enumerate antioxidant vitamins 1
d. Enumerate lipoproteins in human plasma 1
e. Enumerate mechanisms of enzyme inhibition 1

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f. Enumerate functions of zinc 1
g. Differentiate between starch and glycogen 1
h. Why urea cycle is called a bicycle 1
i. Alkaptonuria 1
j. Draw structure of cholesterol 1

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