Types of Transport DOL

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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 (ATP), moving from an area of high concentration to an area of low 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 low to high concentration) using energy (ATP).

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What is bulk transport?

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Bulk transport, also known as vesicular transport, is the process of moving large quantities of materials into or out of a cell using vesicles, which requires energy.

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What is diffusion?

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Diffusion is a type of passive transport where molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

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What is osmosis?

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

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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 without energy.

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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, which drives the movement of molecules during diffusion.

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What role do transport proteins play in active transport?

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Transport proteins in active transport help move substances across the cell membrane against their concentration gradient, requiring energy.

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What is endocytosis?

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Endocytosis is a type of bulk transport where cells engulf materials from the outside environment into vesicles to bring them inside the cell.

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What is exocytosis?

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Exocytosis is the process by which cells expel materials in vesicles, releasing them into the external environment.