Our blood transports oxygen from the lungs to the cells and returns with what byproduct of metabolism?
A) Lactic acid
B) Carbolic acid
C) Carbon dioxide
D) Carbon monoxide

Question

Quizplus · Accepted Answer

Carbon dioxide is the byproduct of metabolism that is transported in the blood back to the lungs where it can be exhaled. Lactic acid is a byproduct of anaerobic metabolism, carbolic acid is not a byproduct of metabolism, and carbon monoxide is a toxic gas that is not a byproduct of human metabolism.

Our Blood Transports Oxygen from the Lungs to the Cells