Which statement about enzymes is false?

Question

Enzymes:

A are composed mostly of protein domains
B have greater affinity for their substrates
C can initiate biochemical cascade reactions

Pick the one you KNOW is right, DON'T paste me paragraphs of text! I'd like a couple of lines explaining why you chose it.

Answer 1

I vote for B

Answer 2

B - Definitely true - enzymes are very specific to their substrate. The "lock and key" model.

C - Definitely true - enzymes catalyze a particular reaction which can then trigger a cascade of other related reactions.

Which leaves A. By process of elimination I would say A has to be false, but actually, while some enzymes are fairly short proteins, other are being discovered which are much larger, multi-domain structures. (Davidson et al.)

I believe all three statements are true!

Edit - I found the following paper describing an enzyme catalyzed cascade reaction. Glueck, et al.

Answer 3

I know for a fact that A & B are correct.... so I'm voting for C