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.