What Distinguishes Passive Diffusion from Other Types of Diffusion

question 5

Multiple Choice

What distinguishes passive diffusion from other types of diffusion?

• A)Passive diffusion transports only certain molecular species from a region of high to a region of low concentration.
• B)Passive diffusion always transports material from a region of high to a region of low concentration.
• C)Passive diffusion requires special processes and structures within the membrane to be present.
• D)Passive diffusion requires a threshold concentration gradient to be present, before it can take place.

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