Breathing and Exchange of Gases Question 32
32. The carbon dioxide is transported via blood to lungs as
[1995]
(a) dissolved in blood plasma
(b) in the form of carbonic acid only
(c) in combination with haemoglobin only
(d) carbaminohaemoglobin and as carbonic acid
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Answer : d
Hints & Solution
(d) Carbon dioxide is transported via blood to lungs mostly as carbaminohaemoglobin and carbonic acid. It is released in lungs in exchange with oxygen.
