Which of the following is an example of internal regulation during the cell cycle?
A: a gap outside of the cell (caused by skateboarding accident) triggers cell
division.
B: a cell receives a signal from the cell's own nucleus to divide.
C. Tumor cells continue to divide without receiving a signal.
D: Hormones in the blood cause cell growth in a growing teenager.

is B because when a accident happens to the human skin the cell knows that the other cells died so it make the cellular reproduction to send that cell to fix the human tissue

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Oseni Oseni · Answer 2 · 2021-10-19T13:34:23+02:00

The option that gives an example of internal regulation during the cell cycle would be a cell receiving a signal from the cell's own nucleus to divide. The correct option would be B.

Internal regulation of cells refers to the reaction of certain parts of cells to a signal given from the control center of cells. In other words, it refers to the control of processes in order to ensure that the required limits are not breached.

There are different checkpoints in a typical cell cycle and cells will not proceed to the subsequent stage of the cycle if there is no go-ahead from the control center once the checkpoints are reached.

The checkpoints ensure that things are in order before moving to the critical stages of the cell cycle. If the checkpoints are breached, the cell could lose control and divide uncontrollably.

Hence, a cell receiving signals from the nucleus to divide is an example of internal regulation.

More on internal cell control can be found here: https://brainly.com/question/2456292