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 diffusion?

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Diffusion is the passive movement of particles 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 across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

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What is active transport?

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Active transport is the movement of substances against their concentration gradient, requiring energy (usually in the form of ATP) to move molecules from low to high concentration.

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What is facilitated diffusion?

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Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

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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 swelling or 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 leading to cell shrinkage.

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What is an isotonic solution?

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An isotonic solution has an equal concentration of solutes compared to the inside of the cell, resulting in no net movement of water into or out of the cell.

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What are lipids?

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Lipids are a group of hydrophobic organic molecules that include fats, oils, and phospholipids, which are essential components of cell membranes.

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What are the monomers of lipids?

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The monomers of lipids are glycerol and fatty acids.