6. The Membrane
Simple and Facilitated Diffusion
Multiple Choice
Multiple ChoiceWhich of the following does not accurately describe a channel or a carrier?
A
Channel – open to both sides of the membrane simultaneously.
B
Carrier – open to one side of the membrane at a time.
C
Carrier – requires a conformation change to complete function.
D
Channel – not selective for molecules that move through it.
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