Why do you think an organism needs so many different enzyems?

Enzymes are the proteins that control the speed of the chemical reactions in our body, without the enzymes in our body, those reactions do not take place within the cells.

Explanation:

It helps to keep the cell alive. enzymes have also helped the cells to communicate with each other for growing purposes of the cells, life and death under control. There are many potential substrates are occurred in the body such as molecules.

Minerals, and the metabolic substrates. The physical structure of the enzyme is usually to the substrate which they can fit. So the organism needs the different types of enzymes to the body.

what are the choices?

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.