Active and Passive Transport Review

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What is Active Transport?

Back

A process that requires energy to move molecules against their concentration gradient.

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What is Passive Transport?

Back

The movement of molecules across a cell membrane without the use of energy, following the concentration gradient.

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What is Osmosis?

Back

The diffusion of water molecules through a semi-permeable membrane.

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What is Exocytosis?

Back

A form of active transport where materials are expelled from the cell.

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What is Endocytosis?

Back

A process by which cells take in substances by engulfing them.

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What is Phagocytosis?

Back

A type of endocytosis where the cell engulfs large particles or cells.

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What is Pinocytosis?

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A type of endocytosis where the cell engulfs liquid and small particles.

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What does 'semi-permeable' mean?

Back

A membrane that allows some molecules to pass through while blocking others.

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What is the concentration gradient?

Back

The difference in concentration of a substance across a space.

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What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to move molecules across the membrane.