Question

Assertion : A protein is a heteropolymer.
Reason : Dietary proteins are the source of nonessential amino acids.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

Each protein is a polymer of amino acids. As there are $20$ types of amino acid, a protein is a heteropolymer and not a homopolymer. Amino acids can be essential or non-essential. Certain amino acids are essential for our health and they have to be supplied through our diet. Hence, dietary proteins are the source of essential amino acids. Non-essential amino acids are those amino acids which are synthesised in our body.