It doesn't require energy. E.g. facilliated diffusion
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What is active transport?
Requires ATP (energy) to pump a substance against a concentration gradient.
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What is Diffusion?
The movement of molecules across a partially permeable membrane from an area of high concentration to an area of low concentration down a concentration gradient.
Need to be transported across the membrane via facilitated diffusion that uses a channel or carrier protein.
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Can anything pass through the cell membrane?
Not everything. Its easier for small or non-polar substances to pass through membrane but large or polar substances cannot and require a channel or carrier protein to transport them across.
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What is facilitated diffusion?
Is a passive process that uses carrier and channel proteins to transport substances across the membrane.
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How does the diffusion path/distance affect diffusion?
The shorter the distance of diffusion the faster the rate of diffusion and the more likeliness the substance is to diffuse.
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What is Pinoendocytosis?
A liquid entering a cell. Pino = Liquid. Endo = Entering.
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What is phagoexocytosis?
A solid exiting a cell. Phago = Solid. Exo = Exiting.
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Other cards in this set
Card 2
Front
What is active transport?
Back
Requires ATP (energy) to pump a substance against a concentration gradient.
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