Question

11 how does the cellular membrane of the finger mullet’s cell contribute to homeostasis within the cell?
a it serves as a solid membrane, allowing no materials to pass into and out of the cell.
b it serves as an impermeable membrane, allowing only water to move into and out of the cell.
c it serves as a selectively permeable membrane, allowing water and other materials to move into and out of the cell as needed.
d it serves as a permeable membrane, allowing any material to easily pass into and out of the cell, whether needed or not.
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Explanation:

Cellular membranes maintain homeostasis by regulating material exchange. A selectively permeable membrane controls entry/exit of substances (water, nutrients, waste) based on cell needs, which is critical for stable internal conditions. Options A (no materials), B (only water), and D (unrestricted) are incorrect as they do not describe selective permeability.

Answer:

C. It serves as a selectively permeable membrane, allowing water and other materials to move into and out of the cell as needed.