Which of the following is true of enzymes? Enzyme function is independent of physical and chemical environmental factors such as pH and temperature. Enzyme function is increased if the 3-D structure or conformation of an enzyme is altered. Nonprotein cofactors alter the substrate specificity of enzymes. Enzymes increase the rate of chemical reaction by lowering activation energy barriers. Enzymes increase the rate of chemical reaction by providing activation energy to the substrate.

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Variety of living organisms; includes genetic, species, and ecological types.