First slide

Amino acids

Question

General formula of $α -$ amino acids is $H_{2} N - CH (R) - COOH .$ If -R is $- {({CH}_{2})}_{4} - {NH}_{2}$ then the amino acid is

Easy

A

Tryptophan
B

Lysine
C

Histidine
D

Aspartic acid

Solution

Lysine is a basic amino acid where -R is $- {({CH}_{2})}_{4} - {NH}_{2};$
Aspartic acid is an acidic amino acid in which -R is $- {CH}_{2} COOH;$
In Histidine -R is

In Tryptophan -R is

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