Question

An amino acid is an amphoteric molecule.
a.True
b.False

Answer 1

Answer:

True

Explanation:

the amphoteric behaviour of amino acid is explained when its present in Aqua state . in an aqua solution the carboxylic group of Amino acid lose a Proton and Amino group can accept a Proton. in ionic form the amino acid can exhibited both an acidic and basic properties . therefore an Amino acid is an amphoteric molecule.

Answer 2

Answer;  True

Explanation:    the word amphoteric means a substance capable of acting both as an acid and as a base.

in the molecule of an amino acid eg.Glycine, there exists a carboxyl group(COOH) -the acidic part and an amino group(NH3) -the basic part. And by obeying Bronsted-Lowry's defintion of acids and bases, they are not excepted from the rule, as the carboxyl group has a tendency to donate a proton, whilst the amino group has a tendency to accept a proton.

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