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Active & Passive Transport

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by

Bridget Collier

on 10 October 2013

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Transcript of Active & Passive Transport

Active & Passive Transport
The substance goes from one concentration level to another.
Requires energy for
the substance to move
the transport of a substance across a cell membrane
Active
Passive
Always happens from a low
concentration to a higher
concentration
The substance requires
assistance from a protein to
cross the membrane
Does not require energy
Diffusion, Facilitated Diffusion, and Osmosis are types of passive transport
Occurs when a substance passes through the membrane
occurs from a higher concentration to a lower concentration
both involves a substance moving across a membrane
Important to the cell
Full transcript