M.Sc. (Semester III) (CBCS) Examination Nov/Dec-2018
Zoology
BIOCHEMISTRY
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Draw diagrams wherever necessary.
Q.1 Choose the correct alternatives for given multiple choice question:- 14
The most important epimer of glucose is
Fructose Xylose
Arabinose Manose
From stoichiometry of oxidative phosphorylation one FADH2 molecule
produces ATP.
3 2.5
2 1.5
The enzyme inhibition in which Km increases and Vmax remains constant
is inhibition.
Competitive Uncompetitive
Non-competitive Mixed types
is the cofactor of transaminase enzyme involved in amino acid
metabolism.
FMN Pyridoxal phosphate
Cobalamine NAD+
The electron affinity of electron acceptor in redox conjugate pair is
measured in terms of
Volts Amphere
Calorie Joule
In digit Enzyme Commission number the second place indicates

Class Sub-class
Sub sub-class Serial number
is required as a reductant in fatty acid synthesis.
NADH FADH2
NADPH FMNH2
The catalytic activity of enzyme is restricted to its small portion called as
site.
Passive Active
Allosteric Regulatory
is regulatory enzyme in cholesterol biosynthesis.
HMG CoA reductase Mevalonate oxidase
Acyl transferase Squalaneepoxidase
10) Cyanide inhibits electron transport at
NADH dehydrogenase Succinate dehydrogenase
Cytochrome C redutase Cytochrome C oxidase
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SLR-VS-511
11) bond is involved in secondary structure formation of protein.
Hydrogen Covalent
Phosphodiester Amide
12) The aminopterin inhibits the synthesis of
Uracil Cytosine
Guanine Thymine
13) is apolysaccharide used in tissue matrix.
Cellulose Chitin
Hyaluronic acid Starch
14) The net gain of ATP from complete aerobic respiration of 1 glucose
molecule is ATP.
10 32
7 37
Q.2 Answer the following:- (Any Four) 08
Why fatty acid synthesis and oxidation are not called as reversible?
What is free energy?
Draw neat and labelled structure of B form DNA.
Explain the synthesis of Adenylate from ionosinate (IMP).
Define activators of enzyme. Give an example.
Write notes (Any two) 06
Disaccharide with two suitable examples.
Laws of thermodynamic.
Regulation of glycolysis.
Q.3 Answer the following:- (Any two) 08
Write a note on ribozymes.
Discus in detail triglyceride biosynthesis.
Explain in detail deamination and decarboxylation reaction of amino acid
metabolism.
Answer the following:- (Any one) 06
Add a note on components and bonds of nucleic acid.
Write an assay on energy conservation and release.
Q.4 Answer the following:- (Any two) 10
Explain in detail pentose phosphate pathway.
Illustrate in detail the mechanism of enzyme catalysis.
Write a note on cholesterol biosynthesis.
Answer the following:- (Any one) 04
What are the applications of enzyme immobilization in various
industries?
Explain the structure and function of sphingolipid.
Q.5 Answer the following:- (Any two) 14
Write a note on goals of metabolic engineering.
Explain general outline of amino acid metabolism.
Discuss the chemiosmotic hypothesis and add a note on uncouplers of
oxidative phosphorylation.