Question

question 7
vitamins are an important dietary ingredient because most are.
a inorganic cofactors.
b coenzymes.
c enzymes.
d macronutrients.
e electrolytes

Explanation:

• Option A: Vitamins are organic, not inorganic cofactors, so A is wrong.
• Option B: Most vitamins act as coenzymes (organic cofactors) for enzymes, aiding metabolic reactions. This matches their role.
• Option C: Vitamins are not enzymes (enzymes are proteins/RNA), so C is wrong.
• Option D: Vitamins are micronutrients (needed in small amounts), not macronutrients (like carbs, fats, proteins), so D is wrong.
• Option E: Electrolytes are ions (e.g., Na⁺, K⁺), not vitamins, so E is wrong.

Answer:

B. coenzymes.