B.Sc. I (Biotechnology) (Semester II) (CBCS)
Examination, 2018
bioChemistry and cell physiology
Paper I Biochemistry
Day and Date Monday, 26-11-2018 Total 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
Number of carbon atoms in cholesterol is
17 19 27 30
Vitamin K is found in
Green leafy plants Meat
Fish Milk
Primary structure of proteins involves type of bond.
Peptide Hydrogen Disulfide Glycosidic
optically inactive amino acid.
Alanine Glycine Valine Leucine
is an example of aldose sugar.
Glycerose Ribulose
Erythrulose Dihydroxyacetone
Amylose is constituent of carbohydrate.
Glycogen Cellulose
Inulin Starch
Liver oils of various fishes are the richest sources of
Retinol Riboflavin
Thiamine Niacin
oxygen carrying protein in human beings.
Insulin Haemoglobin
Oxytocin Albumin
Lysine is example of amino acid.
Basic Acidic Neutral Aliphatic
10) Deficiency of retinol causes disease.
Berry berry Diabetes
Keratomalacia Scurvy
11) Nucleotides consist of
Pentose sugar
Pentose sugar, phosphate
Pentose sugar, phosphoric acid and nitrogen base
Phosphate and nitrogen base
12) sugar is present in milk.
Glucose Galactose Lactose Ribose
13) carbohydrate is not further hydrolised.
Monosaccharide Disaccharide
Oligosaccharide Polysaccharide
14) m-RNA is also known as
hn-RNA Soluble RNA
Supernatant RNA Adaptor RNA
2. Answer the following (any 7). 14
Define phospholipids.
ii) What is Isomerization
iii) Draw the structure of glycine and alanine.
iv) Write a note on peptide bond.
Draw the neat labeled diagram of t-RNA.
vi) Write biochemical role of thiamine and riboflavin.
vii) Give the function of triglycerides and phospholipids.
viii) Write a note on water soluble vitamins.
ix) Define zwitterions and isoelectric point.
3. Answer the following (any 10
Explain forces involved in protein structure.
ii) Distinguish between DNA and RNA.
iii) Write a note on monosaccharides derivatives.
Explain fluid mosaic model of plasma membrane. 4
4. answer any two of the following 14
Describe classification of amino acids with examples and structures.
ii) Write a note on Watson and Crick model of DNA.
iii) Define carbohydrates and write in detail classification of carbohydrates.
5. answer any two of the following 14
Explain components of nucleic acids with primary structure of nucleic acids.
ii) Write a note on structural levels of proteins with examples.
iii) Write source, requirement and biochemical role of niacin and thiamine.