Question

10 multiple choice 1 point following is the structure of an amino acid: h h o | | || h - n - c - c - oh | r predict the charge of this amino acid at a ph of 1. zwitter ion negative stay uncharged positive

Explanation:

Step1: Analyze amino - acid structure

An amino - acid has an amino group ($-NH_2$) and a carboxyl group ($-COOH$).

Step2: Consider low - pH effect on functional groups

At a low pH (pH = 1), the amino group ($-NH_2$) will be protonated to form $-NH_3^+$, while the carboxyl group ($-COOH$) remains un - dissociated as the acidic environment inhibits its de - protonation.

Step3: Determine overall charge

Since the amino group is protonated and has a positive charge and the carboxyl group is uncharged, the overall charge of the amino - acid is positive.

Answer:

Positive