Question

Which among the following is an essential amino acid?

• A. Glycine
• B. Alanine
• C. Valine
• D. Serine

Answer 1

The Correct Option is C

The question requires identifying an essential amino acid from the given options. Essential amino acids are those that cannot be synthesized by the human body and must be obtained from the diet. Here's a breakdown to understand which among the given amino acids is essential:

• Glycine: This is a non-essential amino acid, meaning it can be synthesized by the human body.
• Alanine: Another non-essential amino acid, also synthesized by the body.
• Valine: An essential amino acid that must be consumed through the diet as the body cannot produce it. It plays a vital role in muscle metabolism and tissue repair.
• Serine: This is non-essential and is synthesized by the body from other metabolites.

Thus, the correct answer is Valine, as it is classified as an essential amino acid.

Answer 2

An essential amino acid is one that cannot be synthesized by the body and must be obtained from the diet.

• Valine is an essential amino acid, meaning the body cannot produce it, and it must be obtained through food.
• Glycine and Alanine are non-essential amino acids, as the body can synthesize them.
• Serine is also a non-essential amino acid, as it can be synthesized by the body.

Thus, the correct answer is Option C: Valine.