Which explains why the nuclear membrane breaks down during cell division? So the cytoplasm can be divided.
So the duplicated chromosomes can be separated into new cells.
So the chromosomes can be replicated.
So it makes it easier for the DNA to be mutated.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.