Question

question 14 (1 point)
the particular ph at which a given amino acid exists in solution as a zwitterion is called the_____
o isoelectric point
o stoichiometric point
o isoionic point
o equivalence point
o isobestic point

Explanation:

Amino acids have both acidic and basic groups. At a specific pH (the isoelectric point), they exist as zwitterions (neutral dipolar ions). The isoelectric point is the pH where the amino acid has no net charge. Other terms like stoichiometric point (related to reaction ratios), isoionic point (different in context), equivalence point (in titrations), and isobestic point (in spectroscopy) do not apply here.

Answer:

isoelectric point