PPT-Diffusion and osmosis

CHAPTER 2 OLEVEL BIOLOGY 5090 GCE 2 Diffusion and osmosis Content 21 Diffusion 22 Osmosis 23 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. Thinking Log. 15. . The cell membrane only lets certain things in. This is called being ____________ _____________.. 16. . Does diffusion use energy?. Answers. Thinking Log. 15. . The cell membrane only lets certain things in. This is called being . 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.. & . Osmosis. Why are diffusion and osmosis important?. Diffusion and osmosis are important because they provide . evidence. for the existence and movement of particles, that is, they provide . evidence. 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 . WHAT happens in our body to our . cells. . when we drink too much . salt??. Diffusion. date. Diffusion. : when a solution spreads out everywhere.. This happens by itself because particles can naturally move around (vibration, rotation, translation of atoms). Facilitated Diffusion, Osmosis and Active Transport. Learning Objectives. To recap the process of diffusion.. To understand the concepts of facilitated diffusion, active transport and osmosis.. To understand what is meant by water potential (. 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. 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.). and Osmosis. Diffusion . is the movement of particles from an area of high concentration to an area of low concentration. When a particle moves from an area of high concentration to an area of low concentration, it is said that it is moving down its . 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.. . 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. . . 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.