Which of the following INCORRECTLY describes mechanisms of CO2 transport? A) 7-10% of CO2 is dissolved directly into the plasma B) just over 20% of CO is carried in the form of carbaminohemoglobin C) as bicarbonate ions in plasma D) attached to the heme part of hemoglobin

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Which of the following INCORRECTLY describes mechanisms of CO2 transport? A) 7-10% of CO2 is dissolved directly into the plasma B) just over 20% of CO is carried in the form of carbaminohemoglobin C) as bicarbonate ions in plasma D) attached to the heme part of hemoglobin

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3. 7-10% of CO2 is dissolved directly into the plasma

Explanation:

Molecules of carbon dioxide are transferred by one of three methods into the blood from body tissues to the lungs including binding to hemoglobin, moving as a bicarbonate ion and absorbing directly into the blood. Its movement is influenced by various carbohydrate properties in the blood which are as follows:

Carbon dioxide is more soluble than oxygen in the blood. Plasma dissolves about 5 to 7 percent of all carbon dioxide. Carbon dioxide may bind to plasma proteins, or it may penetrate red blood cells and bind to hemoglobin and form carbaminohemoglobin which covers 20% of CO2.

Hence, 3 is the right choice.