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. Learning Outcomes. explain what is meant by . passive transport . (diffusion and facilitated diffusion including the role of membrane proteins), . active transport. , . endocytosis . and . exocytosis;. Lab 4: Diffusion and Osmosis. PROBLEM . – What about physical pressure? . AIM: Describe the process of passive transport (diffusion across the membrane).. . It is easy to say that water will move from high concentration to low concentration…but look at the cell to the right…. 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. & . 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 . 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 . 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). Mr. Black . Warm Up February 10, 2016. What is an organelle?. During a chemical reaction….. Reactants increase while the products decrease. . Reactants decrease while the products increase. . Products always equal the reactants . 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.. 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. . 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.. Diffusion is a process of . mass transport. that involves the atomic . or molecular motion. .. In the simplest form, the diffusion can be defined as the . random walk. of an ensemble of particles from regions of high concentration to regions of lower concentration.