B.Sc. II Biotechnology (Semester IV) (CGPA) Examination, 2018
metabolism
Day and Date Friday, 11-5-2018 Max. Marks 70
Time 10.30 a.m. to 1.00 p.m.
Instructions All questions carry equal marks.
Figures to right indicate full marks.
Draw neat and labeled diagrams.
1. Rewrite the following sentences by using correct alternative 14
Which of the following is both ketogenic and glucogenic amino acid
valine tryptophan lysine none of these
How many molecules of acetyl co-A produced in oxidation of palmitic
acid
6 7 8 9
is an example of uncoupler of ATP synthesis.
DNSA 4 dinitrophenol
Tryptomycin IAA
How many molecules of ATPs are synthesized per NADH oxidation
1 2 3 4
Citric acid cycle takes place in
cytosole
inter membrane space
inner membrane of mitochondria
matrix of mitochondria
Transaminase enzymes are present in
liver pancreas
heart intestine
PFK-2 converts fructose 6 phosphate to
glucose 6 phosphate fructose 1 phosphate
fructose 6 bisphosphate fructose 6 bisphosphate
The final product formed in glycolysis is acid.
acitic carboxylic lactic pyruvic
In C4 plants during CO2 fixation enzyme converts pyruvate into
PEP.
hexokinase glucokinase
phosphofructo kinase pyruvate phosphate dikinase
10) The succinate is oxidized to fumarate by the flavoprotein
succinate dehydrogenase succinate synthase
fumarase fumerate synthase
11) The site for oxidative phosphorylation is of mitochondria.
Outer membrane Inner membrane
Matrix Inter membrane space
12) De Novo purine nucleotide synthesis begins with
PRPP PEP GAR FGAR
13) The most active NADH shuttle, which functions in liver, kidney and heart
mitochondria is the
malate-aspartate shuttle glycerol 3-phosphate shuttle
glycerol malate shuttle none of these
14) Transamination is the process where
carboxyl group is transferred from amino acid.
amino group is transferred from amino acid
amino acid synthesis takes place
amino acid breakdown takes place
2. Answer the following (any 14
What is photosystem
ii) Write a note on reciprocal regulation of glycolysis and gluconeogenesis.
iii) Give the diagrammatic representation of ATP synthese enzyme.
iv) What is β-oxidation
Give two examples of glycogenic amino acids.
vi) Define photophosphorylation.
vii) How the UDP glucose forms
viii) Write a note on chemiosmotic hypothesis.
ix) Define glycolysis.
3. Answer the following (any 10
Explain the biosynthesis of amino acids.
ii) Write a note on inhibitors and uncouplers of electron transport chain.
iii) How the cholesterol regulation takes place
Explain the synthesis of glucose from its non carbohydrate precursors. 4
4. Answer any two of the following 14
Write a note on biosynthesis of purines and pyrimidines.
ii) Explain the shuttles through which reducing poteintail is transferred from
cytosole to mitochondria.
iii) Write a note on tricarboxylic acid cycle.
5. Answer any two of the following 14
Write a note on oxidative phosphorylation.
ii) Explain z-scheme of non cyclic photophosphorylation.
iii) How the oxidation of unsaturated and odd chain fatty acids takes place