Question

The basic categorisation of amino acids depends on their ___ group.

• A. Amino group
• B. H atoms
• C. Carboxyl group
• D. R group

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Amino group

B

H atoms

C

Carboxyl group

All amino acids have an alpha carbon atom that binds to an amino group, a carboxyl group, Hydrogen atom and an R-group. There are twenty different amino acids that occur commonly in biological systems based on the type of R group present. For example, if the R group in an amino acid contains methyl group $\left(C{H}_3\right)$ it is called Alanine. The characterisitc feature of an amino acid is also dependent on the R group, if the R group is hydrophillic the amino acid falls under the hydrophillic category.