Why meiosis and mitosis are required in sexually reproducing organisms (like humans)

Mitosis and meiosis both involve cells dividing to make new cells. This makes them both vital processes for the existence of living things that reproduce sexually. Meiosis makes the cells needed for sexual reproduction to occur, and mitosis replicates non-sex cells needed for growth and development. Together, they provide the cellular basis for healthy growth and sexual reproduction.

Processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another.