Active Transport

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What is Active Transport?

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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 in the form of ATP.

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What is Phagocytosis?

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Phagocytosis is a type of active transport where cells engulf large particles or other cells, often referred to as 'cell eating'.

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What is Pinocytosis?

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Pinocytosis is a type of active transport where cells take in liquid from the surrounding environment, often referred to as 'cell drinking'.

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What is Exocytosis?

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Exocytosis is the process by which a cell expels materials in vesicles, releasing them outside the cell.

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What is the Sodium-Potassium Pump?

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The sodium-potassium pump is a type of active transport mechanism that pumps sodium ions out of the cell and potassium ions into the cell, crucial for maintaining cellular function.

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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 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 without energy.

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What role do protein pumps play in active transport?

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Protein pumps are integral membrane proteins that use energy to transport ions or molecules across the cell membrane against their concentration gradient.

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What is the significance of active transport in cells?

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Active transport is essential for maintaining concentration gradients of ions and nutrients, which are critical for various cellular processes.

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What is Osmosis?

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Osmosis is the passive movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.