ZOO/V/CC/13 Student's Copy
2 0 1 8
CBCS
5th Semester
ZOOLOGY
SEVENTH PAPER
Biochemistry
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 10
Tick the correct answer in the brackets provided 1×10=10
1. Cholic acid is found in bile in the form of
sodium salts
calcium salts
liquid
solid
2. Amino acids which contain only a single amino and carboxyl group are
called
monoamino dicarboxylic acids
monoamino monocarboxylic acids
diamino monocarboxylic acids
diamino dicarboxylic acids
/140 1 Contd.
3. A non-protein compound that is necessary for the function of an enzyme is
holoenzyme
cofactor
coenzyme
apoenzyme
4. Ricket-like disease found in adults in India and China is
hypervitaminosis
antisterility
osteomalacia
osteoporosis
5. The formation of glucose or glycogen from non-carbohydrate sources such
as fats or proteins is called
glycogenesis
glycogenolysis
glycolysis
gluconeogenesis
6. In glycogenesis, glucose is phosphorylated to
glucose-2-phosphate
glucose-4-phosphate
glucose-6-phosphate
glucose-8-phosphate
7. Which of the following is the prosthetic group of NADH dehydrogenase?
NADH
FAD
NADPH
FMN
8. The enzymes of the TCA cycle in a eukaryotic cell are located in the
mitochondria
nucleus
plasma membrane
lysosomal bodies

9. A nucleoside is composed of
a base a sugar
a base a phosphate a sugar
a base a phosphate
None of the above
10. Each cycle of b-oxidation produces
1 FADH2 1 NAD+ and 1 acetyl-CoA
1 FADH2 1 NADH and 1 acetyl-CoA
1 FADH2 1 NADH and 2CO2 molecules
1 FADH2 1 NAD+ and 2CO2 molecules
SECTION—B
Marks 15
Write short notes on the following 3×5=15
1. Significance of lipids
OR
Properties of amino acids
2. Suicide inhibitor
OR
Properties of vitamin C
3. Gluconeogenesis
OR
Glycogenolysis
4. Enzymes of tricarboxylic cycle
OR
ATP synthase
5. Ketogenesis
OR
Nucleotides

PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
1. What are carbohydrates? Describe the different types of carbohydrates.
Add a note on its significance.
OR
Give an account on the properties of peptides. 10
2. Write notes on the following 5+5=10
Ribozyme
Coenzymes
OR
What are enzymes? Explain Michaelis-Menten equation for enzyme action.
1+9=10
3. What is glycogenesis? Describe the various steps of glycogenesis with their
significance.
OR
Describe the process of glycolysis in detail. Add a note on its significance.
8+2=10
4. What is oxidative phosphorylation? Give a detailed note on electron
transport chain. 1+9=10
OR
Give a detailed note on hexose monophosphate shunt system. 10
5. What is urea cycle? Explain the various steps in urea cycle and also
explain how urea cycle is linked with TCA cycle.
OR
Give a detailed account on b-oxidation of fatty acids with a well-labelled
flowchart of the mechanism. 10