Simple Diffusion of Molecules Occurs

question 63

Multiple Choice

Simple diffusion of molecules occurs

• A) from an area of lesser concentration to an area of greater concentration.
• B) in non-living systems as well as living systems.
• C) across plasma membranes only through transport proteins.
• D) until those molecules are more highly concentrated on one side of the plasma membrane.
• E) only in molecules that are in gaseous state.

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