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Lecture-2 Cellular Transport Notes This Powerpoint is hosted on  www.worldofteaching.com Please visit for 100’s more free powerpoints
About Cell Membranes ,[object Object],[object Object],[object Object],[object Object],TEM picture of a real cell membrane.
[object Object],[object Object],[object Object],[object Object],[object Object],About Cell Membranes (continued) Phospholipid Lipid Bilayer
Proteins Membrane movement animation Polar heads  love water  & dissolve. Non-polar tails  hide from water . Carbohydrate cell markers 1972 Singer and Nicolson Fluid Mosaic Model  of the cell membrane
[object Object],[object Object],[object Object],About Cell Membranes (continued) Pores
Outside of cell Inside of cell (cytoplasm ) Lipid Bilayer Proteins Transport  Protein Phospholipids Carbohydrate chains Structure of the Cell Membrane Go to Section: Animations  of membrane structure
Types of Cellular Transport ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],high low This is gonna be hard work!! high low Weeee!!!
Passive Transport ,[object Object],[object Object],[object Object],[object Object],[object Object]
3 Types of Passive Transport ,[object Object],[object Object],[object Object]
Passive Transport:   1.  Diffusion ,[object Object],[object Object],[object Object],http://bio.winona.edu/berg/Free.htm Simple Diffusion Animation
[object Object],[object Object],[object Object],Facilitated diffusion   (Channel Protein) Diffusion  (Lipid Bilayer) Passive Transport :  2.  Facilitated Diffusion Carrier Protein A B ,[object Object]
High  Concentration Low  Concentration Cell  Membrane Glucose molecules Protein channel Passive Transport:  2. Facilitated Diffusion Go to Section: Transport Protein Through a   Cellular Transport From a- High Low ,[object Object]
[object Object],[object Object],[object Object],[object Object],Osmosis  animation Passive Transport:  3.  Osmosis
Types of Active Transport ,[object Object],[object Object],Sodium Potassium Pumps  (Active Transport using proteins) Protein changes shape to move molecules:  this requires energy!
Active Transport ,[object Object],[object Object],[object Object],[object Object],[object Object]
Types of Active Transport ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Types of Active Transport ,[object Object],[object Object],[object Object],[object Object],Endocytosis & Exocytosis  animations
Effects of Osmosis on Life ,[object Object],[object Object]
Hypotonic Solution Hypotonic :  The solution has a lower concentration of solutes and a higher concentration of water than inside the cell.  (Low solute; High water) Result :  Water moves from the solution to inside the cell): Cell Swells and bursts open  ( cytolysis )! ,[object Object]
Hypertonic Solution Hypertonic :   The solution has a higher concentration of solutes and a lower concentration of water than inside the cell .  (High solute; Low water) Result :  Water moves from inside the cell  into the solution:  Cell shrinks  ( Plasmolysis )! ,[object Object],shrinks
Isotonic Solution Isotonic :   The concentration of solutes in the solution is equal to the concentration of solutes inside the cell. Result :   Water moves equally in both directions and the cell remains same size!  (Dynamic Equilibrium) ,[object Object]
What type of solution are these cells in ? A C B Hypertonic Isotonic Hypotonic

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Biology lecture 2

  • 1. Lecture-2 Cellular Transport Notes This Powerpoint is hosted on www.worldofteaching.com Please visit for 100’s more free powerpoints
  • 2.
  • 3.
  • 4. Proteins Membrane movement animation Polar heads love water & dissolve. Non-polar tails hide from water . Carbohydrate cell markers 1972 Singer and Nicolson Fluid Mosaic Model of the cell membrane
  • 5.
  • 6. Outside of cell Inside of cell (cytoplasm ) Lipid Bilayer Proteins Transport Protein Phospholipids Carbohydrate chains Structure of the Cell Membrane Go to Section: Animations of membrane structure
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22. What type of solution are these cells in ? A C B Hypertonic Isotonic Hypotonic