Cell Transport

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What is cell transport?

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Cell transport refers to the movement of substances across the cell membrane, which can occur through passive or active mechanisms.

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What is passive transport?

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

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What is active transport?

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Active transport is the movement of molecules against their concentration gradient, from an area of lower concentration to an area of higher concentration, requiring energy.

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What is diffusion?

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Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

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What is osmosis?

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Osmosis is the diffusion of water molecules across a selectively permeable membrane.

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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 endocytosis?

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Endocytosis is an active transport process where cells engulf substances from the outside environment into vesicles.

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What is exocytosis?

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Exocytosis is an active transport process where cells expel large molecules or waste products by vesicles fusing with the cell membrane.

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What is a concentration gradient?

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A concentration gradient is the difference in the concentration of a substance between two areas.

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What role do transport proteins play in cell transport?

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Transport proteins assist in the movement of substances across the cell membrane, especially for larger or polar molecules.