Answer:
c - having controlled experiments within ethical limits.
Explanation:
Active site
A reactant
binds to an enzyme in a region known as the active site during a reaction. The active site is the
most important part of the enzyme because it is where the chemical reaction
happens. It usually contains three to four amino acids and a binding site that
binds the substrate and prepares it for catalysis.
Answer:
c-ab is the only correct answer
Diffusion is is like (spreading around), so it wouldn't smell that strong the further away you got... but you would still smell it