Question

Match List-I with List-II:

List-I	List-II
(A) Thiamine (B1)	(i) Riboflavin adenine nucleotide
(B) Riboflavin (B2)	(ii) Tetrahydrofolic acid
(C) Niacin	(iii) Nicotinamide adenine dinucleotide
(D) Folic acid	(iv) Co-carboxylase

Choose the correct answer from the options given below:

• (A) - (IV), (B) - (I), (C) - (III), (D) - (II)
• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

To remember vitamin functions, link each vitamin to its specific coenzyme role: Thiamine (B1) to co-carboxylase, Riboflavin (B2) to FAD/FMN, Niacin to NAD/NADP, and Folic acid to tetrahydrofolic acid.

Answer 1

The Correct Option is A

Vitamins and their metabolic coenzyme roles:
• Thiamine (Vitamin B1) is essential for carbohydrate metabolism, as it’s a precursor for co-carboxylase.
• Riboflavin forms important coenzymes, like flavin adenine dinucleotide (FAD) and riboflavin adenine nucleotide, which are vital for redox reactions.
• Niacin is converted into nicotinamide adenine dinucleotide (NAD) and NADP, both crucial for many metabolic processes, especially in redox reactions.
• Folic acid plays a role in nucleotide synthesis, and it is metabolized to tetrahydrofolic acid.
The correct matching is: (A) - (iv), (B) - (i), (C) - (iii), (D) - (ii).