M.Sc. (Semester (CBCS) Examination Oct/Nov-2017
Biotechnology
CONCEPT OF BIOCHEMISTRY
Day Date: Saturday, 18-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Section- I is compulsory.
Answer any four questions from Section-II.
Section I
Q.1 Multiple Choice Questions: 07
In Ramchandran plot, the angles represent the bond angles
in C-C bond.
psi phi
gamma delta
During synthesis of cAMP, the cyclization of ATP molecule occurs in
presence of enzyme.
Transaldolase Transketolase
ATP synthase Adenylatecyclase
The Phosphate and ribose groups are donated by during the
bio synthesis of nucleotides.
PRPP Orotate
Hypoxanthine HGPRT
Elevated level of is used as a diagnostic tool for pregnancy.
Leutinizing hormone vasopression
Human chorionic gonadotropin somatostatin
Retinol, retina and retinoic acid are the vitamers of vitamin
A B1
B5 B12
The deficiency of enzyme hypoxanthine guanine phosphoribosyl
transferase result in which is an inborn disorder.
Lesch Nyhan syndrome Marasmus
Pomes disease Alkaptonuria
A thermodynamic reaction cannot occur spontaneously only if the ΔG is

At equilibrium Negative
Positive Maximum
Define the following terms: 07
Secondary messenger
Redox potential
Hormone
Vitamin
Standard free energy
Gluconeogenesis
Protein stability
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SLR-ME-94
Section II
Q.2 Add a detail account on 'Inborn errors of amino acid metabolism'. 14
Q.3 Describe phtosystem I and photosystem II. 14
Q.4 Give the general classification hormones. Explain in detail the mechanism of
action of any one hormone.
14
Q.5 Answer any Two of the following: 14
Describe biological coupled reactions. Add a note on 'redox potantial'.
Describe structure role of fat soluble vitamins.
Explain structure and role of cAMP.
Q.6 Answer any TWO of following 14
Describe concept of protein stability.
Illustrate biosynthesis of nucleotide.
Describe hormonal control of menstrual cycle.