The ability of histidine to buffer hydrogen ions is because histidine contains
A)an ionizable group
B)a free carbon atom that accepts hydrogen ions
C)bicarbonate molecules
D)None of the above answers are correct

Question

Quizplus · Accepted Answer

Histidine contains an ionizable group in its side chain, specifically an imidazole group, which can donate or accept hydrogen ions depending on the pH of the solution. This property allows histidine to act as a buffer for hydrogen ions.

The Ability of Histidine to Buffer Hydrogen Ions Is Because