Biomolecules Question 138

Question: Proteins are composed of

[MP PMT 1995; J & K 2005]

Options:

A) $ \alpha - $ amino acids

B) Carbohydrates

C) Vitamins

D) Mineral salts

Show Answer

Answer:

Correct Answer: A

Solution:

Peptides are formed by condensation of $ \alpha $ -amino acids.

$ H_2N-CH_2COOH+H_2N-CH_2-COOH \xrightarrow{-H_2O}H_2N-CH_2\underset{\text{peptide bond}}{\mathop{-CONH-}}CH_2COOH \xrightarrow{H_2N-CH_2COOH} $ and so on.