11. The main buffer system of the human blood is A.H2CO3 - HCO3 B.H2CO3 - CO32- C.CH3COOH - CH3COO- D.NH2CONH2 - NH2CONH+
Answer: Option A Solution: Bicarbonate buffer is the most important buffer system in blood plasma (generally in the extracellular fluid). This buffer consists of weak acid H2CO3(pK1 = 6,1) and conjugated base HCO3- (bicarbonate).
