Hemoglobin
A)plays a critical role in determining the total amount of O₂ that is exchanged in the lungs because it removes O₂ and keeps the $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ low so that net diffusion continues
B)combines only with O₂
C)is found in erythrocytes
D)does both a and c
E)does none of the above

Question

Quizplus · Accepted Answer

Hemoglobin is a protein found in erythrocytes (red blood cells) and plays a critical role in determining the total amount of O₂ that is exchanged in the lungs. It binds with O₂ in the lungs, allowing it to be transported throughout the body. In the tissues, hemoglobin releases O₂, keeping the $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ low so that net diffusion of O₂ from the blood to the tissues can continue.

Hemoglobin A)plays a Critical Role in Determining the Total Amount PO2\mathrm { P } _ { \mathrm { O } _ { 2 } }PO2​​

Hemoglobin
A)plays a Critical Role in Determining the Total Amount $\mathrm { P } _ { \mathrm { O } _ { 2 } }$