Multiple Choice
Which of the following equations represents the Ideal Gas Law?
7. Gases
The Ideal Gas Law
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Which gas is primarily transported through the blood as bicarbonate ions?
A
Oxygen (O2)
B
Nitrogen (N2)
C
Hydrogen (H2)
D
Carbon dioxide (CO2)
Verified step by step guidance1
Understand that gases are transported in the blood in different forms. Carbon dioxide (CO2) is one of the primary gases transported in the blood.
Recognize that carbon dioxide is transported in the blood in three main forms: dissolved in plasma, chemically bound to hemoglobin, and as bicarbonate ions (HCO3^-).
Focus on the bicarbonate ion form. When CO2 enters the blood, it reacts with water (H2O) to form carbonic acid (H2CO3), a reaction catalyzed by the enzyme carbonic anhydrase.
The carbonic acid (H2CO3) then dissociates into bicarbonate ions (HCO3^-) and hydrogen ions (H+). This is the primary method of CO2 transport in the blood.
Conclude that the gas primarily transported through the blood as bicarbonate ions is carbon dioxide (CO2), not oxygen (O2), nitrogen (N2), or hydrogen (H2).
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