AP BIOLOGY

Detailed explanation-1: -A typical proliferating human cell divides on average every 24 h. This division timing allows cells to synchronize with other physiological processes and with the environment. The circadian clock, which orchestrates daily rhythms, directly regulates the cell division cycle and is a major synchronizing factor.

Detailed explanation-2: -For most human cells, a single cell cycle takes approximately 24 hours.

Detailed explanation-3: -Those two groups therefore make up the giant majority of the turnover. About 330 billion cells are replaced daily, equivalent to about 1 percent of all our cells. In 80 to 100 days, 30 trillion will have replenished-the equivalent of a new you.

Detailed explanation-4: -In 24 hour average duration of cell cycle of a human cell, cell division proper lasts for only about an hour.

Detailed explanation-5: -Hence, Interphase is the longest phase of cell division. In a 24-hour cell cycle, 23 hours are for the Interphase-phase and 1 hour for the Mitosis phase.