Download "Carbohydrates and Lipids" of Biochemistry Question Paper for B.A., B.Sc.1st Semester.

B.A./B.Sc. (General) First Semester

Biochemistry

Paper - A: Carbohydrates and Lipids 

Time allowed: 3 Hours Max. Marks: 45 

NOTE 

Attempt five questions in all, including Question No. 1 which is compulsory and selecting one question from each Unit.

1.a) Differentiate between:

i) Osmosis and dialysis

 ii) Anomers & Epimers 

iii) Saturated and unsaturated fatty acids

iv) HDL and LDL (4x2)

b) Write structure of B-D-fructofuranose. (1)

UNIT -I 

II. a) Derive Henderson Hasselbach equation. 

b) Define buffer. Name some biological important buffers. (6,3)

III. a) What makes water a biological important solvent? Explain. 

b) What do you understand by colligative properties? Comment on its significance in biology (4,5)

UNIT-II

IV. a) Give reaction of monosaccharides with hydrogen cyanide and hydroxylamine. (2x3)

 b) What do you mean by glycoproteins? Differentiate between O-glycoproteins and N- glycoproteins. (3)

V. a) Elaborate on glycosaminoglycans. Give the structure of any two glycoproteins. 

b) Differentiate between starch and glycogen. (6,3)

VII. a) Give the salient features of double helical structure of DNA with the help of diagram.

b) What do mean by minor bases of DNA. Give structure of any two such bases. (6,3)

UNIT - IV

VIII. a) What do you mean by porphyrins? Draw structure of porphyrin nucleus.

b) Write a detailed note on the detection of porphyrins. (6,3) 

IX. Discuss heme and other metalloporphyrins occurring in nature in detail. (9)