Question

By adding a little of acid or base, the change in pH of blood is not significant, because blood:

• A. Has iron as a part of molecule
• B. Is a body fluid
• C. Has serum protein which works as buffer
• D. Is easily coagulated

Answer 1

The correct option is C Has serum protein which works as buffer

Blood system contains buffer system $H_{2}C{O}_3+NaHC{O}_3$ because the $pH$ change is dangerous to body and causes damage to many chemical reactions inside body.

This buffer system works as buffer and thus the change in $pH$ in blood is not significant.