Active Transport

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What is Active Transport?

Back

Active transport is the process by which cells use energy to move substances against their concentration gradient, from an area of lower concentration to an area of higher concentration.

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What is required for Active Transport to occur?

Back

Energy is required for active transport to occur.

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What is the difference between Active Transport and Passive Transport?

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Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

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What is an example of Active Transport?

Back

An example of active transport is the sodium-potassium pump, which moves sodium ions out of the cell and potassium ions into the cell.

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What is Endocytosis?

Back

Endocytosis is a type of active transport where cells engulf substances from the outside environment into the cell.

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What is Exocytosis?

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Exocytosis is a type of active transport where cells expel substances from the cell into the external environment.

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What is the role of ATP in Active Transport?

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ATP (adenosine triphosphate) provides the energy required for active transport processes.

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What does it mean to move substances against the concentration gradient?

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Moving substances against the concentration gradient means transporting them from an area of lower concentration to an area of higher concentration.

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What is the concentration gradient?

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

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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 substances across the cell membrane without using energy.