Final answer:
Vitamins are organic compounds that function as coenzymes, which are necessary for enzyme function in the body. Without vitamins, the body would be unable to produce coenzymes.
Step-by-step explanation:
Vitamins are organic compounds that generally function as coenzymes. A coenzyme is a "helper" molecule that is required for a protein enzyme to work. Vitamins play many roles in good health, ranging from maintaining normal vision (vitamin A) to helping the blood clot (vitamin K).
Therefore, without vitamins, the body would be unable to produce coenzymes, which are necessary for enzyme function.