Cellular Transport

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What is Cellular Transport?

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Cellular transport refers to the movement of substances across the cell membrane, which can occur through various processes such as diffusion, osmosis, and active transport.

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What is 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 without the use of energy.

Tags

NGSS.HS-LS2-3

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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 Active Transport?

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Active transport is the movement of substances against their concentration gradient (from low to high concentration) using energy from the cell.

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What is Passive Transport?

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Passive transport is the movement of substances across a cell membrane without the use of energy, typically from high to low concentration.

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What is Exocytosis?

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Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane, releasing their contents outside the cell.

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What is Endocytosis?

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Endocytosis is the process by which a cell takes in substances by engulfing them with the cell membrane, forming a vesicle.

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What is Facilitated Diffusion?

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Facilitated diffusion is a type of passive transport that uses protein channels to help move substances across 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, which drives the movement of molecules.

Tags

NGSS.HS-LS2-5

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What role do protein channels play in cellular transport?

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Protein channels facilitate the movement of specific molecules across the cell membrane, especially during facilitated diffusion.