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C13Diffusion&Osmosis

Diffusion&Osmosis

QuestionAnswer
What does permeable mean A membrane is said to be permeable to a substance if substances can pass through it
What does impermeable mean Substances cannot pass through it
What does diffusion mean The spreading out of molecules from a region of high concentration to a region of low concentration
What is a solvent A solvent is a liquid that dissolves other substances eg water
What is a solute A solute is a substance that has been dissolved eg salt dissolved in water
What is a solution A solution is a mixture of a solute and a solvent eg salt water
What is osmosis Osmosis is the movement of water molecules across a selectively permeable membrane from a region of high water concentration to a region of low water concentration
What is aoemba Aoemba is a single celled organism that lives in fresh water pools and ponds
What is turgor/turgid pressure The pressure of the cytoplasm and vacuole against the cell wall of the plant
What is plasmolysis The loss of water from the cytoplasm and the movement of the cell membrane away from the cell wall
Created by: eimeardoyle2014
 

 



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