Enzyme function is influenced by physical and chemical environment factors such as pH and temperature.
-Enzymes may require a nonprotein cofactor or ion for catalysis to take place.
-Enzymes increase the rate of chemical reaction by lowering activation energy barriers.
Retrotransposons are class of transposons that contain long terminal repeats and code for an enzyme that synthesize DNA using an RNA template. It is found in all eukaryotes but absent in prokaryotes. About 42% of human genome is made up of retrotransposons. They are particularly abundant in plants, in maize 49-70% genome is made up of retrotransposons.
The correct answer is that when a species is made up of different smaller groups, each of those smaller groups is known as a variety.
