Which of the Following Is TRUE Concerning the Structure and Function

Multiple Choice

Which of the following is TRUE concerning the structure and function of enzymes?

A) All enzymes bind cofactors necessary for their function.
B) An apoenzyme is a combination of a cofactor bound to a holoenzyme.
C) Enzymes can function at a wide range of pH.
D) Competitive inhibition of an enzyme occurs when an inhibitor binds to an allosteric site on the enzyme.
E) After an enzyme has catalyzed a reaction, it resumes its original shape and can interact with a new substrate molecule.