Cellular respiration occurs in the body 24 hours per day. During exercise, the rate of cellular respiration increases. Why does increased cellular respiration cause people to breathe faster?

A. More heat is generated by the body, and breathing cools the body quickly.
B. More water is lost from the body, and breathing hydrates the body.
C. More nutrients are needed to produce more energy, and more oxygen must be removed from the body.
D. More oxygen is needed to produce more energy, and more carbon dioxide waste must be removed from the body.

More oxygen is needed to produce more energy, and more carbon dioxide waste must be removed from the body.

Explanation:

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.