As conditions change inside and outside the cell, the cell must adjust to maintain a stable internal environment. Which of the following is NOT an example of how cells maintain homeostasis?

A. The cell membrane regulates what enters and exits the cell.

B. The nucleus contains all the genetic information of the cell.

C. Lysosomes break down molecules to excrete from the cell.

D. A cell began to repair skin cells through the process of mitosis.