Cell Transport

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What is cell transport?

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

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What is passive transport?

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Passive transport is the movement of materials across a cell membrane without the use of energy, relying on concentration gradients.

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What is active transport?

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Active transport is the movement of materials across a cell membrane using energy, typically against a concentration gradient.

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What is diffusion?

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Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until equilibrium is reached.

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What is osmosis?

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Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

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What is a hypotonic solution?

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A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to enter the cell and potentially leading to cell bursting.

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What is a hypertonic solution?

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A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to leave the cell and potentially leading to cell shrinkage.

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What is isotonic solution?

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An isotonic solution has equal concentrations of solutes inside and outside the cell, resulting in no net movement of water.

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What role do proteins play in cell transport?

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Proteins embedded in the lipid bilayer of the cell membrane facilitate the transport of molecules across the membrane, acting as channels or carriers.

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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.