M.Sc. (Semester III) (CBCS) Examination Mar/Apr-2018
Zoology
BIOCHEMISTRY
Time: 2½ Hours
Max. Marks: 70
Instructions: Question number 2 and 6 are compulsory. Attempt any two from Question No. 4 and 5.
Q.1
Rewrite the following sentences by choosing the most correct alternative given below:-
14
The lactose contains glucose and galactose which are joined by linkage.
α−1→4
β−1→4
α−1→6
β−1→6
is inhibitor of Cytochrome C oxidase which is part of oxidative phosphorylation
Rotenone
Amytal
Dinitrophenol
Cyanide
amino acid is involved in biosynthesis of pyrimidine nucleotide .
Aspartate
Histidine
Cysteine
Phenylalanine
The low oxygen supply in tissue leads to
Anoxia condition
Hypoxia condition
Lactic acid fermentation
Both b and c
According to IUB nomenclature system the hydrolases enzyme fall in class.
First
Second
Third
Fourth
Some of are autocatalytic molecule and considered as enzyme.
RNAs
DNAs
Carbohydrates
Lipids
Among the following is an example of storage lipid.
Cardiolipin
Ceramide
Phosphatidyle choline
Tristearylglycerol
Q.2
Long answer type question:- Explain in detail classification and nomenclature of enzymes.
14
Q.3
Answer the following.
Give an account on interconversion of hexoses and pentoses.
07
Write a note on biosynthesis cholesterol.
07
Q.4
Explain the following.
Regulation of enzymes
05
Cooperativity in enzymes
05
Structure and role of cAMP
04
Page 2 of 2
SLR-UT-627
Q.5
Explain in short
Secondary structure of proteins
07
Redox potential and its measurement
07
Q.6
Write short notes on any four of the following:
14
Ribozymes
Enegetic of glycolysis
Energy rich bonds
Micro-RNA
Transport of fatty acids to mitochondria
Enzyme activator