Question

Which of these groups vary from amino acid to another?

• A. Amino group
• B. Carboxylic group
• C. R group
• D. Alpha carbon

Answer 1

The correct option is C

R group

Amino acids are the basic constituents of proteins and the molecule is made up of an amino group and a carboxyl group attached to a central carbon atom called the alpha carbon. The alpha carbon also binds to an R-group, which differs from one amino acid to another and confers the amino acid with its acidic, basic or neutral properties.