Use the diagram of the molecular structure of an amino acid to answer the question.An illustration shows the structure of amino acid as C single bond C with functional groups NH2 and R attached to the first C atom and double bond O and single bond OH attached to the second C atom.Which option explains why this amino acid can act as both an acid and a base?(1 point)ResponsesIt contains both an amino functional group and a methyl functional group. In a solution, the amino group can decrease acidity, while the methyl group can increase acidity.It contains both an amino functional group and a methyl functional group. In a solution, the amino group can decrease acidity, while the methyl group can increase acidity.It contains both an amino functional group and a methyl functional group. In a solution, the amino group can increase acidity, while the methyl group can decrease acidity.It contains both an amino functional group and a methyl functional group. In a solution, the amino group can increase acidity, while the methyl group can decrease acidity.It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can increase acidity, while the carboxyl group can decrease acidity.

Answer 1

The correct option that explains why an amino acid can act as both an acid and a base is:

It contains both an amino functional group and a carboxyl functional group. In a solution, the amino group can decrease acidity, while the carboxyl group can increase acidity.

Amino acids have both a basic amino group (-NH2) which can accept protons (acting as a base) and an acidic carboxyl group (-COOH) which can donate protons (acting as an acid).