Unit 3-Osmosis 4.0 / 5 based on 1 rating ? BiologyOsmosisGCSEAQA Created by: Kasper GeeCreated on: 10-05-15 17:45 What is osmosis? The diffusion of water across a partially permeable membrane. 1 of 15 What does osmosis diffuse from? A high concentration of water to a low concentration of water. 2 of 15 What molecules do a partially permeable membrane allow to pass? Small molecules, like water. 3 of 15 Why does osmosis happen? Due to the random movement of molecules in a solution. 4 of 15 If a solution has more water than other substance, what is it? A dilute solution. 5 of 15 If a solution has less water than other substance, what is it? A concentrated solution? 6 of 15 If there is a dilute solution, what is there a higher chance of? There is a higher change of osmosis because there is more water molecules. 7 of 15 What way does water flow? Toward the concentrated solution. 8 of 15 Why would an animal cell become turgid? If it is put in a solution more dilute than it's cytoplasm. 9 of 15 Why would an animal cell become flaccid? If it is put in a solution more concentrated than it's cytoplasm. 10 of 15 What happens to a plant cell if it is put in a solution more dilute than it's cytoplasm? It's cell membrane will push against the cell wall. 11 of 15 What happens to a plant cell if it is put in a solution more concentrated than it's cytoplasm? It's cell membrane will pull away from the cell wall. 12 of 15 What does the cell wall prevent happening in a dilute solution? It prevents the plant from bursting. 13 of 15 What does the cell wall prevent happening if the plant doesn't get enough water? The cell wall prevents the plant from collapsing. 14 of 15 What is the cell wall of a plant strong enough to do? It's strong enough to maintain the shape of the cell if the cell membrane has pulled away. 15 of 15
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