PPT-Cell biology Lab.6 Osmosis

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. ChemEng. 590B: Tissue Engineering. Lecture 2. January . 24. th. , . 2013. Animal Cell Structure. 2. Figure 6-2 . Molecular Biology of the Cell. (© Garland Science 2008). 3. The Central Dogma of Molecular Biology. 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 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. . . Really smelly demonstration…... Put a few drops of vanilla in a balloon. Shake the balloon, then wait about 30 seconds. Smell the outside of the balloon. What’s going on?. EVIDENCE. INFERENCE. 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). 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). . 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. 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.. 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. …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. The cytology or cell biology. . (Gr., . Kytos. -hollow vessel or cell, logos- to discourse) is a biological science which deals with the study of cells from morphological, biochemical, physiological, developmental, . 11-16). Outcomes. Be able to explain the process of osmosis as involving the spontaneous. net . movement of water molecules from an area of higher water concentration to an area of lower water concentration, through a partially permeable membrane .