Question

all of the following are true facts about enzymes except
a all living cells have enzymes.
b life would not be possible without enzymes.
c enzymes can speed chemical reactions by hundreds to billions of times.
d there are a few types of enzymes, but they each perform many types of reactions.

Explanation:

Enzymes are biological catalysts essential for life. All living cells produce enzymes (A is true). Life depends on enzyme-catalyzed reactions (B is true). Enzymes drastically speed up reactions (C is true). Enzymes are highly specific—each type typically catalyzes one or a few reactions, not many. Thus, D is false.

Answer:

D. there are a few types of enzymes, but they each perform many types of reactions.