SSC CPO 2025 PYQ — Question 96

SSC CPO - 12 Dec 2025 - Shift 1 • General Awareness • Q96

Which amino acid is considered essential in human diet?

Show answer & explanation

Correct answer: C

Explanation

Answer: Lysine.

Explanation:

The human body requires 20 different amino acids to function smoothly, 9 of which are considered 'essential amino acids.' These are termed 'essential' because our body cannot synthesize them on its own; therefore, it is mandatory to obtain them through our diet. Lysine is one such amino acid, playing a crucial role in muscle building, calcium absorption, and the production of hormones and enzymes. Other essential amino acids include valine, threonine, and tryptophan, among others.

Additional Points:

Non-Essential Amino Acids: Alanine, glycine, and serine fall into the 'non-essential' category because the body can synthesize them on its own.

Sources of Protein: Animal products (such as meat and eggs) are considered 'complete proteins' because they contain all the essential amino acids.

Kwashiorkor: This disease can occur in children due to a severe deficiency of protein and essential amino acids in their diet.

Potential Exam Questions and Answers:

Question: How many amino acids, in total, fall into the 'essential' category?

Answer: 9 amino acids.

Question: What is the basic structural unit of protein?

Answer: Amino acid.