The majority of carbon dioxide returns to the lungs
as part of
hemoglobin.
plasma.
oxygen.
bicarbonate ions.

What is the next step in the process after a substrate enters the active site of an enzyme

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation. a. false b. true

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic