active and passive transport

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4 Terms

1
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What is active transport?

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

2
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Give some examples of active transport.

Examples include the sodium-potassium pump, endocytosis, and exocytosis.

3
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What is passive transport?

The movement of molecules across a cell membrane from a region of higher concentration to a region of lower concentration, without requiring energy.

4
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Give some examples of passive transport.

Examples include diffusion, osmosis, and facilitated diffusion.