When tissue of the body are unloading CO2 into the blood, what best describes what happens to most of the CO2? A. Most of the CO2 unloads into the blood plasma where it reacts with water to become HCO3- B. Most of the CO2 unloads into the red blood cell where it reacts with water to become HCO3-, which is then transported out of the red blood cell and directly into the blood plasma. C. Most of the CO2 binds to hemoglobin in the red blood cell. D. Most of the CO2 unloads into the blood plasma where it reacts with water to become HCO3-, which is then transported directly into the red blood cell.

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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When tissue of the body are unloading CO2 into the blood, what best describes what happens to most of the CO2?

A. Most of the CO2 unloads into the blood plasma where it reacts with water to become HCO3-

B. Most of the CO2 unloads into the red blood cell where it reacts with water to become HCO3-, which is then transported out of the red blood cell and directly into the blood plasma.

C. Most of the CO2 binds to hemoglobin in the red blood cell.

D. Most of the CO2 unloads into the blood plasma where it reacts with water to become HCO3-, which is then transported directly into the red blood cell.

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