M.Sc. (Biotechnology)(Semester (CBCS) Examination, 2017
CONCEPT OF BIOCHEMISTRY
Day Date: Thursday, 20-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Note: Section- I compulsory.
Answer ANY FOUR questions from Section-II.
Section- I
Q.1 Multiple Choice Questions: 07
The prostaglandins and structurally related molecules are called
as eicosanoids contain carbon atoms.
10 20 30 40
While conversion of protocollagen to collagen, vitamin
plays role of coenzyme in hydroxylation of proline lysine.
A B C D
The deficiency of enzyme hypoxanthine guanine phosphoriboy
ltranfernsferase result in which is an inborn disorder.
Lesch-Nyhan syndrome Marasmus
Promes disease Alkaptonuria
The first stable four carbon compound of C4 pathway is
Erythrose Acety 1 COA
Glyveraldehyde Oxaloacetic acid
The regulatory committed step in biosynthesis of fatty acid is the
formation of
Malony COA Acety COA
Malony ACP Acetoacetic acid
Increased concentration if calcium ions in blood occurs under the
influence of a hormone secreted by gland
Thyroid Parathyroid Pancreatic Pitutary
A thermodynamic reaction can occur spontaneously only if the ΔG
is
At equilibrium Negative Positive Maximum
Page 1 of 2
SLR-RD 107
Define the following terms: 07
Vitamin
ii) Metabolism
iii) Secondary messenger
iv) Entropy
Hormone
vi) Gluconeogenesis
vii) Protein stability
Section- II
Q.2 Illustrate the reactions, energetic and regulation of 'pentose phosphate
pathway'.
14
Q.3 Explain C3 and C4 pathways. 14
Q.4 Give the general classification and role of plant hormones. 14
Q.5 Answer any Two of the following: 14
Illustrate biosynthesis of nucleotides.
ii) Explain structure and role of cAMP.
iii) Describe Z scheme of noncyclic phosphorlation.
Q.6 Answer any TWO of following 14
Give names and role of water soluble vitamins.
ii) Describe structural levels in protein. Add a note on protein stability.
iii) Describe the laws of thermodynamics. Explain the concept of free
energy'.