Water may move knowledge of osmosis to measure how far the liquid in 1) Cellulose tubing across cell unfamiliar situations and make the capillary tube rises during filled with conc Investigate the effect membranes by predictions. the lesson. sugar solution of water and Explain the movement of water osmosis. attached to concentrated salt molecules as a special type of capillary tube held solution on onion/ diffusion through a partially Osmosis is the in clamp, beaker of beetroot/ rhubarb permeable membrane. movement of water water. cells. Predict and explain what will from a dilute solution happen to cellulose tubing to a more 2) Four beakers Model osmosis. bags filled with or sugar concentrated solution (two of water and solution, placed in beakers of through a partially two of sugar water or sugar solution. permeable membrane. solution); four cellulose sausages Observe and explain the Required Practical: (two of water and effects of water and Osmosis two of sugar concentrated salt solution on Investigate the effect solution). cells of onion/ beetroot/ of a range of rhubarb. concentrations of salt Observation or sugar solutions on activity materials: Use a model to show osmosis the mass of plant living plant or get students to make a tissue. cells: onion/ model. beetroot/ rhubarb Watch a computer simulation microscopes of osmosis in plant and animal slides cells. coverslips water Watch a video clip of osmosis concentrated in blood cells. solution pipettes blotting paper. Model materials: plastic box plasticine for membrane
Water may move across cell membranes by osmosis. Osmosis is the movement of water from a dilute solution to a more concentrated solution through a partially permeable membrane. Required Practical: Osmosis Investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue. knowledge of osmosis to unfamiliar situations and make predictions. measure how far the liquid in the capillary tube rises during the lesson. Explain the movement of water molecules as a special type of diffusion through a partially permeable membrane. Predict and explain what will happen to cellulose tubing bags filled with or sugar solution, placed in beakers of water or sugar solution. Observe and explain the effects of water and concentrated salt solution on cells of onion/ beetroot/ rhubarb. Use a model to show osmosis or get students to make a model. Watch a computer simulation of osmosis in plant and animal cells. Watch a video clip of osmosis in blood cells. Investigate the effect of water and concentrated salt solution on onion/ beetroot/ rhubarb cells. Model osmosis. 1) Cellulose tubing filled with conc sugar solution attached to capillary tube held in clamp, beaker of water. 2) Four beakers (two of water and two of sugar solution); four cellulose sausages (two of water and two of sugar solution). Observation activity materials: living plant cells: onion/ beetroot/ rhubarb microscopes slides coverslips water concentrated solution pipettes blotting paper. Model materials: plastic box plasticine for membrane
AQA-8461-SOW-CELLS.DOCX