Vitamins are described as which of the following?

• A. Organic molecules needed in minute amounts and required for metabolic processes
• B. Large energy storage molecules
• C. Structural proteins
• D. Carbohydrate polymers

Answer: (A)

Vitamins are micronutrients that are organic molecules needed in very small amounts to keep metabolic processes functioning. They often act as coenzymes or precursors to coenzymes, enabling enzymes to catalyze essential reactions in energy production, synthesis of biomolecules, and regulation of metabolism. Because they serve these catalytic roles, vitamins themselves do not provide energy and they are not large structural proteins or carbohydrate polymers. For example, B vitamins help carry out reactions in energy metabolism by forming coenzymes, while vitamin C aids collagen synthesis and acts as an antioxidant. Deficiencies disrupt metabolism and lead to various health problems, highlighting why these tiny organic helpers are crucial.