Download SGBAU BSc 2019 Summer 1st Sem Biochemistry Biomolecules n Nutrition Question Paper

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Time : Three Hours] [Maximum Marks : 80

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B.Sc. Part-I (Semester—I) Examination

18 : BIOCHEMISTRY
(Biomolecules and Nutrition) AW-1634

Note :— All questions are compulsory and carry equal marks except question No. 1 carrying 8 marks.

1. (A) Fill in the blanks (% mark each) :
   1. The charged molecule which is electrically neutral is known as

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   2. Nucleic acids are polymers of
   3. The Pyrimidine present in DNA but absent in RNA is
   4. The vitamin required for carboxylation reaction is
2. (B) Choose the correct alternatives :
   1. Which one of the following is not a basic amino acid ?
      1. Arginine

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      2. Histidine
      3. Lysine
      4. Glycine
   2. Deficiency of which one of the following causes Night blindness ?
      1. Vitamin A

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      2. Vitamin K
      3. Vitamin C
      4. Vitamin D
   3. Number of base pairs present in B-DNA are :
      1. 10

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      2. 11
      3. 9
      4. 7
   4. One gram of carbohydrate produces :
      1. 4 K cal

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      2. 9 K cal
      3. 10 K cal
      4. 3 K cal

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3. (C) Answer in one sentence :
   1. Define essentials of Amino Acids
   2. Define RQ
   3. Define Acid Value
   4. Define Vitamin.

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2. Describe structure and functions of cellulose, starch and chondriotin sulfate. 12
OR
Describe with examples Mutarotation, Optical Activity and Epimerism in Carbohydrates. 12

3. (a) Discuss with examples Saponification value and Iodine number of fats. 4
(b) Describe structure and functions of sphingomyelin. 4

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(c) Describe structure and functions of Ergosterol. 4
OR

(p) Discuss Nomenclature and structure of Amino acids
(q) Discuss the Chemistry and functions of Gangliosides. 4
(r) Explain Rancidity of fats. 4

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4. Describe classification of proteins based on solubility, shape and composition and add a note on Zwitler ionic structure of amino acids. 12
OR
Describe structure and functions of Myoglobin, Keratins and add a note on salting out of Proteins. 12

5. (a) Explain the importance of Iodine and Calcium in human nutrition. 4
(b) Explain diet for old persons 4

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(c) Describe in brief nutritional importance of proteins. 4
OR
(p) Describe Fatty liver. 4
(q) Explain the concept of SDA and RQ
(r) Explain Nutritional importance of lipids. 4

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6. (a) Draw the structure of ATP, GTP, TTP and CTP. 4
(b) Describe in brief double Helical Structure of DNA. 4
(c) Describe Hershey and Chase experiment. 4
OR
(p) Explain Physiological role of Bile pigments. 4

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(q) Explain chemistry of Cytochromes. 4
(r) Describe structure and functions of t-RNA 4

7. (a) Describe structure, functions and deficiency of Vitamin B1 4
(b) Describe Chemistry and functions of Hormones of Adrenal Medulla. 4
(c) Describe sources, daily allowances and functions of Vitamin B12 4

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OR
(p) Describe Hormones of Posterior Pituitary Gland.
(q) Describe classification of Hormones.
(r) Describe structure and functions of Vitamin D.

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