1 / 21

Solutions

Solutions. Solute. Solvent. DIFFUSION & OSMOSIS. DIFFUSION Diffusion animation. Diffusion is the net movement of particles from a region of higher concentration to a region of relatively lower concentration . No input of energy is required. DIFFUSION & OSMOSIS. OSMOSIS

lona
Download Presentation

Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Solutions Solute Solvent

  2. DIFFUSION & OSMOSIS DIFFUSION • Diffusion animation Diffusion is the net movement of particles from a region of higher concentration to a region of relatively lower concentration. No input of energy is required.

  3. DIFFUSION & OSMOSIS OSMOSIS • Osmosis animation Osmosis is the net movement of a solvent, usually water, across a differentially permeable membrane. The net movement of water occurs from the side of the membrane where there is a weak solution (high water concentration, low solute concentration) to the side of the membrane where there is a strong solution(low water concentration, high solute concentration). Osmosis does not require energy input.

  4. Osmosis

  5. Amoeba are small unicellular organismswith a large SA:V Amoeba in action 2 Amoeba in action 1 Some substances can diffuse into /out of these cells very efficiently as a result of the large SA: V ratio Larger food particles can be engulfed: phagoctosis

  6. Plasma Membranes Functions of the cell membrane include: 1. It gives a definite shape to the cell. 2. It contains and provides protection to the internal contents of the cell. 3. It is selectively permeable. 4. It can take in solid and liquid materials by in folding. 5. In animal cells, it is involved in the formation of vesicles, cilia, flagella, microvilli, etc. Plasma Membrane overview 5 min

  7. Passive diffusion across a membrane

  8. Openings both sides eg channels for ion transfer Attach to carbohydrates act as antigens Link cells together Binds hormones and other substances Fluid Mosaic model of plasma membranes

  9. Web page including good animation Cell-Membrane-Function

  10. Plasmolysis

  11. Hemolysis & Crenation

  12. Passive v Facillitated Diffusion

  13. Cytosis

  14. Mitosis

More Related