Answer:
Phosphorylation
Explanation:
ADP is converted to ATP for the storing of energy by the addition of a high-energy phosphate group. The conversion takes place in the substance between the cell membrane and the nucleus, known as the cytoplasm, or in special energy-producing structures called mitochondria.
Ribosomes a other parts of the cells
Answer:
Cell
A virus can only multiply when it is in a cell. It cannot reproduce anywhere else.