Biology CLEP Prep Practice Exam

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What type of molecule is a coenzyme?

  1. A lipid molecule

  2. A carbohydrate molecule

  3. A protein molecule

  4. A vitamin molecule

The correct answer is: A vitamin molecule

Coenzymes are small, non-protein molecules that assist enzymes in carrying out specific chemical reactions in the body. They are typically derived from vitamins, such as coenzyme Q10 from vitamin Q, and are not considered lipids, carbohydrates, or proteins. While lipids and carbohydrates can also play a role in enzyme function, they are not classified as coenzymes. Proteins, while they do have many vital functions in the body, are not considered coenzymes either. Therefore, the only correct answer is D A vitamin molecule.

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