HS/II/CC/09 Student's Copy
2 0 1 8
CBCS
2nd Semester
HOME SCIENCE
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. The term 'Biochemistry' was coined by Carl Neuberg in
1906
1903
1914
1904
2. Cellulose is an example of
monosaccharide
disaccharide
polysaccharide
oligosaccharide
/323 1 Contd.
3. The word 'enzyme' was coined by
Emil Fischer
Neuberg
Kuhn
J. B. Sumner
4. The bond that unites the adjacent Monosaccharides is
glycosidic bond
peptide bond
covalent bond
phosphodiester bond
5. The amino acid which contains hydroxyl group is
cysteine
histidine
glycine
serine
6. Which one does not influence enzyme activity?
Pressure
Temperature
pH
None of the above
7. Conversion of glycogen into glucose is
gluconeogenesis
glycogenolysis
glycolysis
glycogenesis
8. In RNA, guanine pairs with
cytosine
thiamine
uracil
adenine
HS/II/CC/09/323 2 Contd.
9. ATP is synthesized in
nucleus
mitochondria
ribosome
endoplasmic reticulum
10. Enzymes are polymers of
fatty acids
nucleotides
amino acids
proteins
SECTION—B
Marks 15
Write short notes on the following 3×5=15
1. Glucoside formation
OR
Fermentation
2. Saturated and unsaturated fatty acids
OR
Physical properties of lipids
3. Essential and non-essential amino acids
OR
Biological functions of protein
4. Enzyme inhibition
OR
Specification of enzyme
5. Glycolysis
OR
Types of RNA
HS/II/CC/09/323 3 Contd.
PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
1. What are the carbohydrates? Describe biological functions of
carbohydrates. 3+7=10
OR
Classify various types of carbohydrates giving suitable example of each. 10
2. What are the lipids? Classify lipids with examples. 3+7=10
OR
Write notes on the following 5+5=10
Essential and non-essential fatty acids
Biological functions of lipids
3. What are the proteins? Describe secondary structure of proteins. 3+7=10
OR
Write notes on the following 5+5=10
Formation of peptide bond
Physical properties of protein
4. Define enzymes. Briefly mention the mechanism of enzyme action. 3+7=10
OR
Classify enzymes giving suitable example of each. 10
5. What do you mean by Krebs cycle? Discuss various steps involved in
Krebs cycle. 3+7=10
OR
Write notes on the following 5+5=10
Gluconeogenesis
Double-helical structure of DNA