PPT-Osmosis Required Practical

Investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue Osmosis is the movement of water through a selectively permeable membrane The water moves from an area of high concentration of water to an area of lower concentration of water . Reverse osmosis is particularly important. This unit operation enables high purity water to be produced. It is widely used for many different processes in industry and for desalination of sea wat Prefixes, Suffixes, and Vocabulary. Diffusion . = the movement of particles from a high concentration to a low concentration. . Osmosis . = The diffusion of water. . . Hyper . = high, over. . . Hypo. Intermediate 2 Biology. Unit 1: Living Cells. Diffusion. Learning Objectives. Name the method by which substances move in and out of cells.. Define the term . ‘. diffusion. ’. State when diffusion will stop.. CHAPTER 2/ O’LEVEL BIOLOGY 5090 / GCE.. 2. Diffusion and osmosis. Content. 2.1 Diffusion. 2.2 Osmosis. 2.3 Active . transport. Learning outcomes. Candidates should be able to:. (a) define diffusion as the movement of molecules from a region of their higher concentration to a region of. Osmosis vs. . Endocytosis . and . Exocytosis. . Doctor Osmosis: Controller of all of the transporter proteins. Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of greater concentration of water to an area of lesser concentration of water. . Complete problems: . You will be timed. THIS IS OUR LAST COMPLETION ALA. (We will begin grading for correctness after the break.) . Agenda. Catalyst (10 minutes). SWAT (7 minutes) . Review Slides (5 minutes). Osmosis. When the diffusing substance is water, and when the diffusion takes place through a semi permeable membrane the process is called osmosis.. Also the movement of water down a concentration gradient from an area of high solvent concentration (weak solution) to an area of low solvent concentration (stronger solution.). Diffusion. Movement of particles from HIGH to LOW concentration.. Caused by a . concentration gradient . (difference in concentration).. Stops when it reaches . dynamic equilibrium. (equal amounts everywhere). . Molecules are always moving. Molecules move randomly and bump into each other and other barriers. Concentration gradient. Concentration Gradient - change in the concentration of a substance from one area to another.. Root Hair Cells . Roots do more than just anchor the plant in the ground, . they take up water and mineral salts . from the soil. . The surface of the cells have specialised root hair cells with long thin extensions that reach into the surrounding soil. . Water . is one of the most important substances on earth. All plants and animals must have water to survive. If there was no water there would be no life on earth.. Apart from drinking it to survive, people have many other uses for water. These include. REVIEW of Passive Transport. Osmosis. is the movement of . water. into and out of the cell membrane. It is a SPECIAL KIND of Diffusion.. Water will move from an area of HIGH water concentration to an area of LOW water concentration on its own with NO ENERGY!. Solution. Solution. Cell Membrane consists of the lipid . bilayer. , carbohydrates, and proteins.. Water can pass right through lipid . bilayer. What is a solution?. A mixture of two or more substances.. …happens across a semi-permeable membrane. . ONLY WATER. Water is a small but extremely important molecule that makes up most of the liquid part of the cytoplasm in living things. . . Deals . ONLY.