Which statement about enzymes is true?
A)An enzyme functions to increase the activation energy in a reaction.
B)Enzymes are proteins that function as catalysts in nonliving things.
C)Each enzyme can catalyze many different biochemical reactions.
D)Enzymes and substrates fit together like a lock and key.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions