Cell Transport - Obtaining and Removing Materials

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What is Exocytosis?

Back

Exocytosis is the process during which a cell's vesicles join with the cell membrane, releasing their contents outside the cell.

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What is Endocytosis?

Back

Endocytosis is the process by which a cell takes in materials by engulfing them with its membrane.

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What is Facilitated Diffusion?

Back

Facilitated Diffusion is a type of passive transport that moves large molecules through a cell membrane from areas of high to low concentration using transport proteins.

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What is Osmosis?

Back

Osmosis is the movement 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 Diffusion?

Back

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

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What is Active Transport?

Back

Active Transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

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What is a Cell Membrane?

Back

The cell membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.

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What are Vesicles?

Back

Vesicles are small membrane-bound sacs that transport materials within a cell.

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What is a Concentration Gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space.

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What is a Selectively Permeable Membrane?

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A selectively permeable membrane allows certain molecules to pass through while blocking others.