A Selectively Permeable Membrane Ensures That

question 6

Multiple Choice

A selectively permeable membrane ensures that

• A) a cell can maintain its ion concentrations by diffusion.
• B) macromolecules can be obtained through active transport.
• C) dissolved substances can be taken up by pinocytosis.
• D) essential macromolecules and other polar molecules cannot leave the cell by diffusion.
• E) fluids can be obtained rapidly.

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Definitions:

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