1 / 17

Cell Membrane Transport Notes

Cell Membrane Transport Notes. Cell Membrane. Definition: The semi-permeable outer-covering of all cells. Composition: 2 Phospholipid Layers Protein Channels embedded Purpose / Function: Control traffic in and out of the cell Protection. Cell Wall.

rmaffei
Download Presentation

Cell Membrane Transport Notes

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. Cell Membrane TransportNotes

  2. Cell Membrane • Definition: The semi-permeable outer-covering of all cells. • Composition: • 2 Phospholipid Layers • Protein Channels embedded • Purpose / Function: • Control traffic in and out of the cell • Protection

  3. Cell Wall • Definition: The rigid outer-covering of plant, and some bacterial cells. • Composition: • Cellulose (Plants) • Chitin (Fungi) • Peptidoglycan (Bacteria) • Purpose / Function: • Extra Support & Structure • Extra Protection

  4. Cell Membrane Transport • Methods: • Diffusion (No energy needed) • Osmosis (No energy needed) • Active Transport (Energy needed) • “Transport” = Things moving in and out of the cell.

  5. Concentration • Definition: The amount of matter in a given amount of space (area). • High Concentration = More matter in a given amount of space. • Low Concentration = Less matter in a given amount of space. • “Concentration Gradient”: A difference in concentrations.

  6. Permeability • Definition: The ability of matter to move across a boundary. • Cell Membranes are Semi-Permeable. • “Semi-Permeable”: The ability of only certain types of matter to move across a boundary.

  7. Fully Permeable Not Permeable Semi- Permeable

  8. Equilibrium • Definition: State of balance. • Matter moves in and out of cells to reach equilibrium.

  9. Diffusion • Definition: The movement of particles across a concentration gradient, from an area of higher concentration, to an area of lower concentration.

  10. Osmosis • Definition: The movement of water particles, across a concentration gradient, from an area of higher water concentration, to an area of lower water concentration. • *Water concentration with respect to Solute concentration!

  11. Solute & Solvent • Solute: Solid particles • Sugar • Salt • Solvent: Liquid which dissolves solute. • Water

More Related