Question

The human body does not produce

• A. DNA
• B. vitamins
• C. hormones
• D. enzymes

Answer 1

The Correct Option is B

The question asks about which of the given substances is not produced by the human body. Let's evaluate each option:

1. DNA: Deoxyribonucleic acid (DNA) is found in all living cells, and the human body continuously replicates DNA during cell division. Therefore, the body does produce DNA.
2. Vitamins: Vitamins are essential nutrients required in small quantities for various bodily functions. Most vitamins cannot be synthesized by the human body, and they must be obtained from the diet. Thus, the human body does not produce vitamins.
3. Hormones: Hormones are chemical messengers produced by glands in the endocrine system, such as the thyroid gland and the pancreas. Therefore, the body does produce hormones.
4. Enzymes: Enzymes are proteins that act as catalysts to speed up chemical reactions in the body. They are produced by different organs, including the stomach and pancreas. Hence, the body does produce enzymes.

After analyzing all the options, we conclude that the correct answer is vitamins, as they are essential nutrients that must be obtained from external sources like food because the human body does not produce them.