Vitamins

Question 1

Functions of vitamin C

Answer 1

1. Collagen formation
2. Antioxidant
3. Amino acid metabolism
4. Lipid metabolism
5. Iron metabolism
6. Hb metabolism
7. Phagocytosis

Question 2

Functions of pyridoxine

Answer 2

1. Transamination
2. Decarboxylation
3. Niacin coenzymes
4. Heme synthesis
5. Metabolism of sulphur containing AA
6. Sphingolipid synthesis

Question 3

Functions of folic acid

Answer 3

1. DNA & RNA synthesis
2. AA metabolism
3. Protein biosynthesis

Question 4

Functions of thiamine

Answer 4

1. Pyruvate breakdown
2. À-KGA breakdown
3. Co enzyme of transketolase in HMP shunt
4. Acetyl-CoA synthesis

Question 5

Functions of riboflavin

Answer 5

1. Metabolism of C, F, P, nucleotides
2. Role in ETC: FMN, FAD
3. Iron metabolism
4. Niacin metabolism

Question 6

Functions of niacin

Answer 6

1. H+ acceptor and donor

2. In pathways of C, L, AA metabolism

Question 7

Functions of biotin

Answer 7

1. Role in gluconeogenesis and Krebs cycle
2. Role in fatty acid synthesis
3. Metabolism of odd chain fatty acids & branches AA

Question 8

Functions of pantothenic acid

Answer 8

1. Activates fatty acids to acyl CoA
2. Forms Acetyl-CoA
3. Phosphopantetheine

Question 9

Functions of cobalamin

Answer 9

1. Synthesis of Methionine from homocysteine

2. Conversion of methyl malonyl CoA to succinyl CoA