Enzymes can be regulated in a multitude of ways. One such way is by covalent modification, in which functional groups are attached to or removed from the enzyme. One such functional group that can be added to an enzyme is a phosphate group. Depending on the enzyme, addition of a phosphate group may increase or decrease that enzyme's activity. Which of the following is the general name of an enzyme that functions to add phosphate groups to its substrate? a. Oxidoreductases
b. Ligases
c. Hydrolases
d. Isomerases
e. Transferases

Option E

Explanation:

Transferase enzyme are able to transfer a molecule or atom from one compound to the other.  

For example – In the process of phosphorolysis,  add phosphate to the substrate group .  

X-Y + Z = X + Z-Y

Here Z in the phosphate group  

Hence, option E is correct

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

a community that experiences major changes undergoes progress