What are the most common sources of coenzymes?
ADietary vitamins
BMembrane phospholipids
CStructural proteins
DInorganic salts
Answer & Solution
Correct answer: A. Dietary vitamins
1. Coenzymes are organic helper molecules required for enzyme action.
2. The most common sources of coenzymes are dietary vitamins.
3. Some vitamins are precursors to coenzymes and others act directly as coenzymes.
4. Inorganic salts supply cofactors rather than coenzymes, since cofactors are the inorganic helpers.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 6 "Metabolism", section 6.5 Enzymes_
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