10. Define density. *

How tightly or loosely packed a substance is; the compactness of a substance

Explanation:

density is mass spread out over a volume

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

answer; i believe the correct answer is (replication is not conservative);