Plant cells use the sugar molecules produced by photosynthesis for two purposes. Some of the sugar molecules are used to synthesize other organic molecules like amino acids and cellulose so the plant can grow. Other sugar molecules and oxygen are used for to make which provides the energy for many biological processes.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

d. organisms have cells with different shapes and functions.