What Statement About Biochemical Pathways Is Correct

Multiple Choice

What statement about biochemical pathways is correct?

A) All enzymes in the pathway catalyze the same reaction.
B) If an enzyme in a pathway is inactive, adding excessive amounts of its substrate will restore the normal phenotype.
C) If an enzyme in a pathway is inactive, adding excessive amounts of its product will restore the normal phenotype.
D) If the enzyme that catalyzes the final step in a pathway is inactive, all the other enzymes will be inactivated as well.
E) If the first enzyme in a pathway is inactivated, adding the final product will not restore the normal phenotype.