Question

What statement best fits for the human blood having a pH range of 7.35-7.45?

Select one:

a. The range offers little information on the importance of hydrogen ions in blood

b. The very large range suggest that the amount of hydrogen ions in the blood is not critical

c. The very small range suggest that the amount of hydrogen ions in the blood is not critical

d. The very small range suggest that the amount of hydrogen ions in the blood is critical

e. The very large range suggest that the amount of hydrogen ions in the blood is critical

Answer 1

Answer is option D.

This small range of pH maintains the H+ concentration of the blood. We know that H+ concentration of blood is maintained by the buffer system of NaHCO3 and H2CO3. An increase in H+ concentration will decrease blood pH and vice versa. This will cause change in the homeostasis of the body. Most of the enzymes will not work in low or higher pH and most of the biochemical reactions will not occur in the body due to changes in the pH. This will cause a major harm in the body.