Final answer:
The cell membrane is selectively permeable and fluid, aiding in the maintenance of homeostasis. It regulates the movement of substances and allows dynamic exchanges across its surface.
Step-by-step explanation:
The cell membrane, also known as the plasma membrane, plays a crucial role in maintaining homeostasis in cells. It is selectively permeable, meaning that it allows certain substances to enter or exit the cell while restricting others. This selective permeability helps regulate the concentration of ions and molecules inside the cell, ensuring that the internal environment remains stable.
Additionally, the cell membrane is fluid and constantly in motion. This fluidity allows proteins embedded in the membrane to move to areas where they are needed. For example, transport proteins can shuttle molecules across the membrane, contributing to the regulation of the cell's internal conditions.
In summary, the membrane helps maintain homeostasis by controlling the movement of substances into and out of the cell and by allowing the dynamic exchange of molecules across its surface.