BCH 501 BASIC BIOCHEMISTRY

 

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
College of Agriculture, Raichur – 584102
FINAL THEORY EXAMINATION
II SEMESTER, 2009-10

Date: 11-6-2010
ID No: 1011
COURSE NO. 
Time: 3 Hrs
Marks: 35

Q I Fill in the blanks with appropriate words 1×15=15

1. Nucleotides containing three phosphate groups act as ________ and nucleotides containing one phosphate group act as ________ unit of nucleic acids.

2. THF and CoA serve as coenzymes forms of folic acid and pantothenic acid.

3. Nitrogenous basis present in ________ are purines and pyrimidines.

4. Primary structures of α-keratin are intramolecular disulphide linkages and those of hemicelluloses are intramolecular hemiketols and enediols.

5. Isocitrate lyase and malate synthase are important enzymes of glyoxylate cycle.

6. Malate dehydrogenase and fumarate are coenzymes of succinate dehydrogenase and NADH and FADH2 are involved in citric acid cycle.

7. ________ and ________ are two competitive inhibitors of succinate dehydrogenase.

8. Amino acids containing imidazole group are present in arginine and histidine.

9. Fats containing more long chain fatty acids, less unsaturated fatty acids have ________.

10. Saponification and iodine numbers are measures of ________ and ________.

11. Ergosterols and sitosterols are sterols of ________ and ________.

12. The pK value of amino acid remains same but pI varies depending on the ________.

13. The non polar molecules and ammonia are ________ and ________.

14. When one acetyl-CoA molecule is oxidised by TCA cycle, ________ CO2 molecules are released and ________ ATP molecules are produced.

15. Glucose and Fructose molecules have same molecular formula but different ________ formula.

Q II Answer the following 2×5=10

1. Explain maturation.

2. Explain rancidity.

3. Write bonding of water molecules in ice and structure of ATP molecule.

4. What are oxidoreductases?

5. What are significances of HMP pathway and glyoxylate cycle.

Q III Attempt the following 3+3+4=10

1. Explain Oxidation of fatty acid with reactions.

2. Give an account on ETC.

3. Explain isomerism in carbohydrates.
   OR Explain characterization of fats.