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Excretory System › ViewIn a healthy person, the main job of the kidney is to produce urine that contains
A. indigestible foods and bacteria.
B. glucose and amino acids.
C. toxic waste products of metabolism.
D. water and plasma proteins.
Enzymes › View
What factors can affect the activity of an enzyme?
A. Temperature and pH
B. Concentration of the enzyme
C. Concentration of the substrate
D. All of the above