Part 1: Which statement is not associated with covalent catalysis by enzymes?
A) It never involves coenzymes B) A transient covalent bond is formed between the enzyme and the substrate
C) When the reaction is complete, the enzyme returns to iits origional state D) A new pathway from substrate(s) to product(s) is formed that is faster than the uncatalyzed reaction.
Part 2: Which statement is false for a competitive inhibitor?
A) It does NOT change the Vmax B) a'= 1.0 C) it is irreversible D) It is often structurally similar to substrate
Part 3: Which statement about enzymes is FALSE?
A) A substantial amount of their catalytic power results from binding of the substrate(s) through weak interactions. B) They lower the activation energy of a reaction. C) They alter the overall thermodynamics of a reaction. D)They increase the rates of reactions by 10^5-fold to 10^17-fold.