Question

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cell membrane and transport: learn how transporters keep cells healthy
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question 9 of 13
the specific functions of different cell types within a multicellular organism (e.g., nerve cells, muscle cells, kidney cells) are often highly dependent on
the identical set of transport proteins found in all cell membranes.
the unique assortment and abundance of specific transport proteins expressed in their plasma membranes.
the complete absence of transport proteins, relying solely on simple diffusion.

Explanation:

Different cell - types in a multicellular organism have specific functions which are highly dependent on the unique set and amount of transport proteins in their plasma membranes. These transport proteins help in processes like nutrient uptake, waste removal, and signal transduction, which are crucial for the specialized functions of cells such as nerve, muscle, and kidney cells. The first option is incorrect as all cells don't have an identical set of transport proteins. The third option is incorrect because cells cannot function without transport proteins relying solely on simple diffusion for all their needs.

Answer:

The unique assortment and abundance of specific transport proteins expressed in their plasma membranes.