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Cells

Cells . Three Main parts to an Animal Cell . Plasma Membrane Cytoplasm Nucleus. The Nucleus . Controls the activity of the cell Contains the cells genetic information Are NOT found in all types of cells yet some cells have several Why? . Cytoplasm . Includes the cytosol and organelles .

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Cells

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  1. Cells

  2. Three Main parts to an Animal Cell • Plasma Membrane • Cytoplasm • Nucleus

  3. The Nucleus • Controls the activity of the cell • Contains the cells genetic information • Are NOT found in all types of cells yet some cells have several • Why?

  4. Cytoplasm • Includes the cytosol and organelles

  5. The Mitochondria • Site of ATP production • Has two membranes • Outer is smooth • Inner has cristae

  6. Organelle Chart

  7. Organelles • http://interactivesites.weebly.com/cells.html • http://fau.pearlashes.com/anatomy/Heandouts/Study%20Guide%20Cell%20Structures%20of%20Animal%20Cells.htm • http://www.cellsalive.com/cells/3dcell.htm

  8. Plasma Membrane(AKA Cell Membrane) • Allows certain substance into and out of the cell Made up of: • Lipid bilayer • Cholesterol • Glycolipids • Integral and peripheral proteins

  9. Active Transport vs Passive Transport • This is how cells transport molecules across the membrane to maintain homeostasis • Which type of transport requires an input of energy?

  10. Types of Passive Transport • Diffusion- moves from an area of high concentration to an area of low concentration. • Simple vs facilitated diffusion • Simple diffusion allows for lipid soluble substance to cross • Facilitated diffusion membrane proteins assist in getting molecules across • Via channels or carriers • Diffusion • http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html

  11. Ion Channels • Ions are able to move into and out of the cell when gates are opened and closed. • How does the channel do this? • Facilitated diffusion • http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_facilitated_diffusion_works.html

  12. Osmosis • The diffusion of water across a membrane • Is this passive or active transport?

  13. Permeability of Cells Lab Things you should know: • Iodine turns purple black in the presence of a starch • Your hypothesis for part B should address each solution • You should read your background to create your hypothesis for Part B or maybe this will help you • http://www.youtube.com/watch?v=HqKlLm2MjkI

  14. Osmotic MovementReview

  15. The Na+K+ Pump • An integral protein that brings in K+ ions and kicks out Na+ ions • Ions slowly leak back and the pump must continually maintain the balance • Is this an example of active transport or passive transport? • http://www.brainpop.com/science/cellularlifeandgenetics/activetransport/ • http://www.youtube.com/watch?v=GTHWig1vOnY

  16. Cell Transport Analysis • Based on what you learned in class today, was this an example of diffusion, osmosis, endocytosis, exocytosis or phagocytosis? Explain your answer. • Describe how white blood cells attack germs in the body. Which type of cell transport is this an example of? • Why do cells need to use active transport?

  17. Cell Rap • http://www.youtube.com/watch?v=jtf7MKDBF60 • http://www.youtube.com/watch?v=-zafJKbMPA8

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