AP BIOLOGY

Detailed explanation-1: -It helps in reproduction, and gamete formation. It helps in repairing and regeneration of damaged cells. It helps in maintaining the total number of chromosomes in the cell.

Detailed explanation-2: -First, cell division gives us new cells so that our bodies can grow and develop. Second, cell division allows us to renew old, worn out cells or to repair cells that are damaged. In sexual organisms, the genetic information must be halved into gametes before recombining to form zygotes.

Detailed explanation-3: -To grow and repair themselves, cells combine amino acid molecules to form larger protein molecules. Those new proteins build new cells and cell parts. Growth and repair also require energy, so cells also need glucose and oxygen to release energy for these important functions.