B.Sc. II (Biotechnology) (Semester IV) (CBCS) 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
is not an intermediate of citric acid cycle.
Acetoacetate Citrate Ketoglutarate Succinate
is a coenzyme in the reaction catalysed by glyceraldehydes
3-phosphate dehydrogenase.
ATP c u2+ heme NAD+
The conversion of one molecule of glucose to two molecules of pyruvate
results in the net formation of
6 ATP 2 ATP 3 ATP 4 ATP
Enzymes of glycolysis are located in the
Mitochondria Nucleus Cytoplasm Lysosome
The synthesis of glucose from lactate, glycerol or amino acids is called
Glycogenolysis Glycolysis
Lipolysis Gluconeogenesis
Fatty acids are transported into the mitochondria bound to
Ornithine Citrulline
Carnithine Succinylcholine
Pyruvate dehydrogenase complex catalyses
Conversion of pyruvate to acetyl-CoA
Conversion of acetyl-CoA to pyruvate
Conversion of pyruvate to lactate
Conversion of lactate to pyruvate
is required in the transamination reaction.
Biotin Flavin nucleotide
Puridoxal phosphate Nicotinamide
The first intermediate with complete purine ring is
Inosinate Formate Aspartate Glycine
10) CTP is formed from UTP by the action of
Adenylate kinase Dihydroorotase
Aspartate transcarbamolase Cytidylate synthase
11) is required for both purine and pyrimidine biosynthesis.
Aspartate Asparagine Arginine Alanine
12) De novo pathway of purine synthesis require molecules of
ATP.
6 5 4 3
13) compound is produced in both TCA and Urea cycle.
a-ketoglutarate Succinyl co-A Oxaloacetate Fumarate
14) Net generation of energy on complete oxidation of palmitic acid is
129 ATP 131 ATP 146 ATP 148 ATP
2. Answer the following (any 14
Write a note on ethanol fermentation.
ii) Draw the neat labeled diagram of mitochondria.
iii) Give the diagrammatic representation of non-cyclic photophosphorylations.
iv) Explain the reaction for conversion of acetyl co-A into malonyl co-A.
Give two examples of uncouplers of oxidative phosphorylation.
vi) Define photophosphorylation.
vii) H ow the UDP glucose forms
viii) Write a note on hydrolysis of triacylglycerols.
ix) Enlist the sources in purine ring.
3. Answer the following (any 10
Explain transamination and deamination reaction of amino acid
metabolism.
ii) Write a note on cyclic photophosphorylation in plants.
iii) H ow the transport of fatty acids occurs in mitochondria
Explain the process for synthesis of ATP by ATP synthase enzyme. 4
4. Answer any two of the following 14
Write a note on urea cycle.
ii) Describe in brief hexose monophosphate shunt pathway.
iii) Explain the enzymatic reactions for the oxidation glucose molecule in aerobic
conditions.
5. Answer any two of the following 14
Write a note on oxidative phosphorylation.
ii) Explain carbon dioxide fixation in C4 plants. Add a note on rubisco enzyme.
iii) Describe in detail the process of boxidation of saturated fatty acids.