D, is the Answer hhfthvvvbh
Traits controlled by genes can only be acted upon natural selection because they have to helpful to the survival of that organism.
Enzymes are large molecules that speed up the chemical reactions inside cells. Each type of enzyme does on specific job. Enzymes are a type of protein, and like all proteins<span>, they are made from long chains of different </span>amino acids<span>.</span>
The answer is A.the site on an enzyme where the substrate binds
