diffusion Flashcards

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1
Q

define facilitated diffusion

A

large or polar molecules diffuse across a membrane with aid of a protein(channel/carrier)

passive process

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2
Q

what do channel protein facilitate

A

ions and small molecules

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3
Q

how do channel proteins facilitate diffusion

A

act like pore in the membrane
often can be opened and closed to change the flow

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4
Q

what do carrier protein facilitate

A

larger molecules

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5
Q

how do carrier proteins facilitate diffusion

A

molecules attach to the protein and it changes shape to transfer the molecule across the membrane
active/passive

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