Question

multiple choice question
which is characteristic of vitamins?

you can never have too much.
they are necessary to metabolism.
they are inorganic elements.
they are used as fuel.

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Explanation:

• "You can never have too much" is wrong because excessive vitamins (like fat - soluble vitamins) can be harmful.
• "They are necessary to metabolism" is correct. Vitamins act as coenzymes or have other roles essential for metabolic reactions in the body.
• "They are inorganic elements" is wrong as vitamins are organic compounds (except vitamin D which has a unique synthesis but is still organic in nature).
• "They are used as fuel" is wrong. Vitamins do not provide energy (fuel) like carbohydrates, fats, or proteins do.

Answer:

B. They are necessary to metabolism (assuming the option with "They are necessary to metabolism" is labeled as B; if the original options had different labels, adjust the label accordingly based on the original question's option numbering, e.g., if it's the second option, then "The second option: They are necessary to metabolism")