Biomolecules & Human Physiology- Biochemistry-BSC-Nagpur-Summer-2017

Bachelor of Science (B.Sc.) Semester—I Examination
BIO-CHEMISTRY (Biomolecules & Human Physiology)

Optional Paper—1
Time : 3 Hours
Maximum Marks : 50

N.B. :— (1) All questions are compulsory and carry equal marks.
(2) Draw well labelled diagram wherever necessary.

1. Define Carbohydrates. Give its classification and write the chemical structure of a Monosaccharide,
Disaccharide and a polysaccharide. [10M]

OR

Write a note on :—

(a) Mucopolysaccharides [5M]

(b) Mutarotation and anomerism. [5M]

2. Give a detailed account on compound lipids. [10M]

OR

Write notes on :—

(a) Hydrolysis of triglycerides [2½M]

(b) Saponification of fats [2½M]

(c) Rancidity of fats [2½M]

(d) Saturated and unsaturated fatty acids. [2½M]

3. Describe digestion and absorption of carbohydrates. [10M]

OR

(a) Describe the sliding mechanism of muscle construction. [5M]

(b) Describe the neuromuscular junction. [5M]

4. Describe the components of Cell membrane. [10M]

OR

(a) Explain the Fluid Mosaic Model for membrane structure. [5M]

(b) Explain briefly Na+/K+ pump. [5M]

5. Answer any 10 of the following :—

(i) What are Epimers ?

(ii) What is glycosidic linkage ?[1M]

(iii) Write the chemical structure of a-D-glycopyranose.[1M]

(iv) Name any two essential fatty acids.[1M]

(v) Give one difference between fat and oil.[1M]

(vi) Write the chemical structure of Cholesterol.[1M]

(vii) Name the tissue where sarcomere is present.[1M]

(viii) Name two proteins involved in muscle contraction.[1M]

(ix) Name any one protein digesting enzyme.[1M]

(x) Give one point of difference between active and passive transport.[1M]

(xi) Define Antiport.[1M]

(xii) Name the Scientists who proposed the Fluid Mosaic model of membrane. [1M]