PPT-Diffusion and Osmosis in plant and animal cells

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. 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 . 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. What are cells?. Building blocks of living things. Let’s name some living things:. people, plants, animals, bacteria. Cells provide structure, convert nutrients to energy, and carry out specialized functions.. . 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. Sec 4.3 . pg. 74-75. 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 . Chapter 7. 7.1 Cell discovery and theory. The invention of the microscope led to the discovery of cells. .. microscope . Compound Light Microscope. Series of glass lenses. Uses visible light to produce a magnified image. 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. . . Cells in animals and plants have unique forms that allow each to take part in processes that are necessary for the cell and or/living thing to survive.. Cells. What is an organelle?. Organelles are to cells what organs are to the body. . 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.. Figure 3.4f. Some glycoproteins (proteins bonded . to short chains of sugars) serve as . identification tags that are specifically . recognized by other cells.. (f) Cell-cell recognition. Glycoprotein. Do Now: . What are the jobs/ functions of. Eukaryotes vs prokaryotes. Prokaryotes are single celled organisms that have no organelles(parts) that are surrounded by a membrane. They are very small in size and need electron microscopes to be seen. Example : Bacteria . 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. Dr. Habibur Rahman. Associate Professor. J. N. College, Boko. Water Absorption: Organ, Mechanism: . Absorption of water and nutrient is carried by the younger portions of a root, near its tip. The very tip is covered with a sheathing root cap which protects the delicate underlying tissues as the root pushes its way through the soil..