Which of the following buffers the hydrogen ions formed in blood due to the dissociation of carbonic acid?
a) sodium ions
b) haemoglobin
c) OH- ions
d) bicarbonate ions
When the Hydrogen ions associate with oxyhaemoglobin, which of the following is/are produced?
a) haemoglobin
b) haemogobonic acid
c) oxygen
d) both b and c
Explanation: Hb.4O2 + H+ Ã HHb+ 4O2
Which of the following
ions are diffuse from inside the erythrocyte to the plasma?
a) H+
b) HCO3-
c) Cl-
d) Na+
Explanation: this is balanced by the chloride ions in the opposite direction
Which of the following two ions are moved in opposite direction maintaining the balance of ions on either side of RBC membrane?
a) H+ and OH-
b) Cl- and HCO3-
c) Cl- and Na+
d) all of these
Explanation: this phenomena is called chloride shift or Hamburger’s phenomenon
The chloride ions that enter the RBC combine with which of the following ion?
a) Na+
b) HCO3-
c) Ca+2
d) K+
Explanation: these two ions form potassium chloride (KCl)
The bicarbonate ion that enters the RBC combines with which of the following ion?
a) Na+
b) HCO3-
c) Ca+2
d) K+
Explanation: these two ions form sodium bicarbonate (NaHCO3)
