Cell Transport

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What is Active Transport?

Back

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 (ATP).

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What is Passive Transport?

Back

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

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What is Endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane, bringing them into the cell.

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What is Exocytosis?

Back

Exocytosis is the process by which cells expel substances by vesicles fusing with the cell membrane, releasing their contents outside the cell.

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What is Osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is Facilitated Diffusion?

Back

Facilitated Diffusion is the process of passive transport of molecules across a cell membrane via a specific carrier protein.

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What role does ATP play in Active Transport?

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ATP provides the energy required for Active Transport to move molecules against their concentration gradient.

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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 across a space or membrane.

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What is the difference between Diffusion and Osmosis?

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Diffusion is the movement of any molecules from high to low concentration, while Osmosis specifically refers to the movement of water.

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What is a Selectively Permeable Membrane?

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A Selectively Permeable Membrane is a barrier that allows certain substances to pass through while blocking others.