What Would Be an Example of a Cell Maintaining Homeostasis

Question

What would be an example of a cell maintaining homeostasis at the cellular level?
A) a cell of the intestine secretes digestive enzymes
B) a muscle cell contracts
C) a sperm fertilizes an egg
D) a cell takes up potassium to maintain the proper cytoplasmic potassium concentration
E) a cell divides to become two cells

Accepted Answer

Maintaining proper cytoplasmic potassium concentration is an example of a cell maintaining homeostasis at the cellular level. Cells need to regulate the balance of ions and molecules in their cytoplasm to function properly, and taking up potassium is one way they do this.