At pH ___, the pentapeptide Ala-Glu-His-Val-Cys would contain two positively charged groups and one negatively charged group.

3

Explanation:

At pH 3, the pentapeptide Ala-Glu-His-Val-Cys would contain two positively charged groups and one negatively charged group.

This is evident in that peptides have both carboxylic and amino groups.

Given that peptides have a certain amount of H⁺ and OH⁻ ions, it converts to zwitterions.

This conversion process is based on pKₐ and pKb of the acid and the base accordingly.

Therefore, they have two positively charged groups and one negatively charged grou

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

2b2t

explanation:

2b2t