If the side chains of amino acids contain carboxyl (-COOH) groups, they
A) contribute a positive charge to the amino acid at pH 10 AND are considered acidic amino acids.
B) contribute a negative charge to the amino acid at pH 10 AND are considered nucleic acids.
C) contribute a positive charge to the amino acid at pH 10 AND are considered nucleic acids.
D) contribute a negative charge to the amino acid at pH 10 AND are considered acidic amino acids.
E) contribute a negative charge to the amino acid at pH 10 AND are considered acidic monosaccharides.

Question

If the side chains of amino acids contain carboxyl (-COOH) groups, they
A) contribute a positive charge to the amino acid at pH 10 AND are considered acidic amino acids.
B) contribute a negative charge to the amino acid at pH 10 AND are considered nucleic acids.
C) contribute a positive charge to the amino acid at pH 10 AND are considered nucleic acids.
D) contribute a negative charge to the amino acid at pH 10 AND are considered acidic amino acids.
E) contribute a negative charge to the amino acid at pH 10 AND are considered acidic monosaccharides.

Quizplus · Accepted Answer

The Answer is D

If the Side Chains of Amino Acids Contain Carboxyl (-COOH)