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National 5 Transport across membranesAll cells are enclosed by a cell membrane, which is selectively permeable. Molecules can move into or out of cells by diffusion and active transport. Cells can gain or lose water by osmosis. Part of Biology Cell biology
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OsmosisCells can gain or lose water by the process of osmosis. This depends on the water concentration of the solution inside the cell compared to water concentration of the solution outside the cell. The water concentration can be thought of as the proportion of a solution that is water. Solutions with a high concentration of solute molecules, such as sugars or salts, have a low concentration of water molecules and vice versa. Definition of osmosisThe net movement of water from a region of high water concentration to a region of low water concentration through a selectively permeable membrane. This means osmosis is a special case of diffusion: the diffusion of water. In the diagram above solution two gains water faster than it loses sugar. This is because the selectively permeable membrane lets water molecules pass through much more rapidly than it lets sugar molecules pass through. Osmosis
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What is the process of water moving across the cell membrane called?Definition of Osmosis. Osmosis refers to the movement of fluid across a membrane in response to differing concentrations of solutes on the two sides of the membrane.
What is the movement of water across the membrane from high to low?Osmosis is the movement of water from a region of higher concentration to one of lower concentration. Osmosis occurs across a membrane that is semipermeable.
What is movement of water across a membrane from an area of low concentration to high concentration to equalize the fluid concentration on both sides of the membrane?Osmosis is the spontaneous net movement of water across a semipermeable membrane from a region of low solute concentration to a more concentrated solution, up a concentration gradient. This equalizes concentrations on both sides of the membrane.
What is it called in a cell when water passes from an area of higher concentration to an area of lower concentration?Osmosis (/ɒzˈmoʊsɪs/, US also /ɒs-/) is the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration), in the direction that ...
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What is the term that describes the movement of water across a cell membrane from high concentration of water to low concentration of water?
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