Question

The non-essential amino acid among the following is:

• A. valine
• B. leucine
• C. alanine
• D. lysine

Answer 1

The Correct Option is C

To solve this question, we need to understand the classification of amino acids into essential and non-essential categories.

Amino acids are the building blocks of proteins, and they can be classified based on whether the human body can synthesize them or not:

• Essential amino acids: These cannot be synthesized by the human body and must be obtained from the diet.
• Non-essential amino acids: These can be synthesized by the human body even if they are not obtained from the diet.

Let's analyze each option:

1. Valine: It is an essential amino acid. The human body cannot synthesize it, so it must be obtained through dietary sources.
2. Leucine: It is also an essential amino acid. Like valine, it needs to be consumed as part of our diet.
3. Alanine: This is a non-essential amino acid. The human body can synthesize alanine even if it is not consumed in the diet.
4. Lysine: This is another essential amino acid that must be obtained from food.

Based on the analysis, we identify that alanine is the non-essential amino acid among the given options.

Thus, the correct answer is alanine.