Which of the following is not true about essential amino acids?

• A. They can be synthesized by the body in sufficient quantities.
• B. There are nine essential amino acids for humans.
• C. They cannot be synthesized by the body and must be obtained from the diet.
• D. They are required for protein synthesis and overall health.

Answer: (A)

Verified step by step guidance

1. Understand the definition of essential amino acids: Essential amino acids are those that cannot be synthesized by the human body and must be obtained through dietary sources.
2. Identify the number of essential amino acids: Humans require nine essential amino acids, which are crucial for various bodily functions including protein synthesis.
3. Recognize the role of essential amino acids: These amino acids are vital for protein synthesis and maintaining overall health, as they contribute to the structure and function of proteins in the body.
4. Evaluate the statement about synthesis: Essential amino acids cannot be synthesized by the body in sufficient quantities, which is why they must be consumed through diet.
5. Determine the incorrect statement: The statement 'They can be synthesized by the body in sufficient quantities' is incorrect because essential amino acids must be obtained from dietary sources.