A is the most sensible answer
In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate (binding site) and residues that catalyse a reaction of that substrate (catalytic site).
The answer would be true!
animo acid, body, molecules i think
Gas and liquid are states of matter that can take the shape of their containers.
So the correct answer is B.
Hope this helps,
Davinia.
