Biochemistry is the study of the chemical processes occurring in living matter.
<span>B is the correct answer. Multicellular organisms, as with almost all organisms, begin life as a single cell. The increase in the number of cells can be as a result of cell division or cells combining together. </span>
There are several different processes, including glycolysis and the Calvin Cycle, but the umbrella term for getting energy from glucose is cellular respiration.