Many of the biochemical reactions that occur within your cells are catalyzed by enzymes. which of the following statements is true about most enzyme-assisted reactions?
a. enzymes are quickly used up during the reactions
b. they occur more quickly than reactions without enzymes.
c. they can take place at any temperature or ph
d. they can take place only within a ribosome.

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.