Question

Amino acids are the monomers of proteins. Each amino acid consists of a carbon atom bound to a hydrogen atom, an amino group (-NH2), a carboxyl group (-COOH), and a variable R group. Which functional group acts as an acid?

Answer 1

Answer:

The -COOH group of the protein molecule act as acid .

Explanation:

According to Arrhenius law the substance that can donate proton in an aqueous solution is known as acid.

    From this point of view it can the stated that the carboxylic group -COOH act as acid because -COOH group donates proton in aqueous solution and exist as COO-.Thus -COOH group of a protein molecule act as an acid.