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.
Correct Answer:
Verified
Correct Answer:
Verified
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