Active and Passive Transport

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What is Active Transport?

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Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy input.

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What is Passive Transport?

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Passive transport is the movement of molecules across a cell membrane without the use of energy, typically from a region of higher concentration to a region of lower concentration.

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Define Diffusion.

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Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

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What is Osmosis?

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Osmosis is the diffusion of water molecules through a selectively permeable membrane from a region of low solute concentration to a region of high solute concentration.

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What is Exocytosis?

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Exocytosis is a form of active transport where cells expel materials in vesicles that fuse with the cell membrane.

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What is Endocytosis?

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Endocytosis is a form of active transport where cells engulf materials from the outside environment into vesicles.

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What are Protein Pumps?

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Protein pumps are membrane proteins that use energy to transport ions or molecules against their concentration gradient.

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What is Facilitated Diffusion?

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Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

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What is the difference between Active and Passive Transport?

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Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

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What is the role of the cell membrane in transport?

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The cell membrane regulates the movement of substances in and out of the cell, maintaining homeostasis.