Question

Blood is buffered within a narrow range around a pH of 7.4. This means that the pH of blood will remain close to 7.4 when _____.

moderate amounts of acid or base are added
moderate amounts of base, but not acid, are added
moderate amounts of acid, but not base, are added

Answer 1

We are given withe the data that blood buffered to pH of 7.4. This means the pH of blood will remain close to 7.4 when  A. moderate amounts of acid or base are added. When buffers are added,no significant  changes in the pH occurs afterwards.