Each cell in the human body contains thousands of different enzymes responsible for regulating reactions within the cell. which statement explains why a single enzyme is unable to regulate a variety of reactions? a. the binding of a product and an enzyme is specific.
b. the binding of a substrate and an enzyme is specific.
c. the enzyme is consumed by the products of the reactions. d. the enzyme is consumed by the substrates of the reactions

Wich organism obtains its energy from dead or decaying matter

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

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.