Question

antioxidants are substances that give up ______ to free radicals to protect cells.
multiple choice
vitamins
electrons
oxidants
kilocalories

Explanation:

Antioxidants work by donating electrons to free radicals. Free radicals are unstable molecules that can damage cells. By giving electrons, antioxidants neutralize free radicals. Vitamins are a type of antioxidant but the question is about what they give up (not the category they belong to). Oxidants are the opposite of antioxidants. Kilocalories are a measure of energy.

Answer:

electrons