Answer
b. protein
Work Step by Step
The most effective buffer in the intracellular fluid is protein. The protein buffer system accounts for about 75% of all chemical buffering in the body fluids.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.