There are two classes of enzymes: catabolic enzymes break down large molecules into smaller molecules and release energy in the process and anabolic enzymes chain smaller molecules together and require energy to do their work. the illustrated enzyme is and energy.

What is a population? a. all the members of the same species living in the same ecosystem at the same time b. the number of a species living in the same ecosystem over a period of time c. the total number of organisms living in an ecosystem at a point in time d. all the members of a food web in the same ecosystem