Vitamins and Coenzymes for Competitive Exam Success

Vitamins and Coenzymes

Q. What is the primary function of Vitamin B1 (Thiamine)?

Solution

Vitamin B1 (Thiamine) is crucial for energy metabolism, particularly in carbohydrate metabolism.

Correct Answer: B — Energy metabolism

Q. What is the primary function of Vitamin B12?

Solution

Vitamin B12 is essential for DNA synthesis and the formation of red blood cells.

Correct Answer: A — DNA synthesis

Q. What is the role of Vitamin K in the body?

Solution

Vitamin K is essential for blood clotting as it is required for the synthesis of clotting factors in the liver.

Correct Answer: C — Blood clotting

Q. Which vitamin acts as a coenzyme in the metabolism of amino acids?

Solution

Vitamin B6 (Pyridoxine) acts as a coenzyme in the metabolism of amino acids, facilitating transamination and deamination reactions.

Correct Answer: A — Vitamin B6

Q. Which vitamin deficiency is associated with night blindness?

Solution

Vitamin A deficiency can lead to night blindness due to its role in the formation of rhodopsin, a pigment in the retina.

Correct Answer: A — Vitamin A

Q. Which vitamin is a coenzyme for the conversion of pyruvate to acetyl-CoA?

Solution

Vitamin B5 (Pantothenic acid) is a coenzyme in the conversion of pyruvate to acetyl-CoA, a key step in energy metabolism.

Correct Answer: D — Vitamin B5

Q. Which vitamin is known for its role in calcium absorption?

Solution

Vitamin D is crucial for calcium absorption in the intestines, promoting bone health.

Correct Answer: C — Vitamin D

Q. Which vitamin is primarily involved in the synthesis of collagen?

Solution

Vitamin C is essential for collagen synthesis, playing a critical role in the hydroxylation of proline and lysine residues.

Correct Answer: C — Vitamin C

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