PPT-OSMOSIS & TONICITY

Sec 43 pg 7475 Osmosis a special case of diffusion involving water water molecules move across a selectively permeable membrane from an area of high water concentration to an area of low water . Presented by Nitin Chauhan of Culligan (Hall’s Water Group) . For ASPE Cleveland Chapter. October 2012. Outline of Topics . RO. Fundamentals of RO . RO Selection and Design Criteria. How to size a RO. Pharmaceutical Use. Water Purification Engineering . Md. . Saifuzzaman. Associate Professor. Pharmacy Discipline, KU.. E-mail: saifuzzaman17@yahoo.com. Pharmaceutical Industrial Management . Pharm. 5211: Section B. The Cell in its Environment. Ch 7, Section 2. L3 Biology. Molecules are always moving. Molecules move randomly and bump into each other and other barriers. Diffusion. Movement of molecules from an area of high concentration to an area of lower concentration . Overview. The plasma membrane is the boundary that separates the living cell from its . surroundings. It controls what goes in and what goes out. Regulates molecular traffic. The plasma membrane . is a . 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. 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.). Leaving Certificate Biology. Higher Level. Selective Permeability. Cell membranes are selectively permeable meaning they can control what enters and leaves the cell. Selective permeability is controlled by proteins embedded in the cell membrane. 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. . . SIMPLE DIFFUSION. WHAT IS DIFFUSION. Diffusion is the movement of molecules or particles from a region of high concentration to a region of low concentration. . . Salt water is desalinated to produce fresh water suitable for human consumption or irrigation. .. There are about 1.5 . x . L of sea water in ocean of which 3.5 percent (by mass) is dissolved material.. Good practice for test-taking strategy, too.. By the end of this lesson…. You should be able to solve word problems that require analysis of . osmosis scenarios.. #1. If you soak your hands in dishwater, you may notice that your skin absorbs water and swells into wrinkles. 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.. Osmosis. The diffusion of water across a differentially permeable membrane has been given a special name it is called, Osmosis , Osmotic pressure develop on all side of the membrane that has the higher solute concentration.