Question

The carbon dioxide is transported via blood to
lungs as
(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

Answer 1

Answer:

c

Explanation:

the carbon dioxide is transported via blood to lung as haemoglobin

Answer 2

The carbon dioxide is transported via blood to lungs as combination with haemoglobin.

Gases like carbon dioxide cannot directly diffuse through the system. They must bind with haemoglobin to form a stable intermediate. In the case of carbon dioxide, carbaminohaemoglobin is formed which is used to transport carbon dioxide out of the body. Carbon dioxide must ultimately be transported out of the body as it getting accumulated is harmful for the body.