Objectives
1) Describe the functions of the plasma membrane
2) Explain how scientists used early experimental evidence to make deductions about membrane structure and function
3) Describe the fluid properties of the cell membrane and explain how membrane fluidity is influenced by membrane composition
4) Explain how hydrophobic interactions determine membrane structure and function
5) Describe how proteins are spatially arranged in the cell membrane and how they contribute to membrane function
6) Describe the diffusion process and explain why it is a spontaneous process
7) Explain what regulates the rate of passive transport
8) Explain why a concentration gradient across a membrane represents potential energy
9) Define osmosis and predict the direction of water movement based upon differences in solute concentration
10) Explain how bound water affects the osmotic behavior of dilute biological fluids
11) Describe how living cells with and without walls regulate water balance
12) Explain how transport proteins are similar to enzymes
13) Describe one model for facilitated diffusion
14) Explain how active transport differs from diffusion
15) Explain what mechanisms can generate a membrane potential
16) Explain how potential energy generated by transmembrane solute gradients can be harvested by the cell and used to transport substances cross the membrane
17) Explain how large molecules are transported across the cell membrane
18) Give an example of receptor=mediated endocytosis
19) Explain how membrane proteins interface with and respond to changes in the extracellular environment
20) Describe how cells communicate with each other and why this is an important function for call cells.
WS
Guided Notes: Membranes
***#8 answer - f: intercellular joining proteins - these proteins help to connect adjacent cells using membrane proteins - see the last section in Ch 5 - we studied these during the cells unit.
Diffusion and Osmosis Challenge
Osmosis is Serious Business
Challenge #2
Drawing Project
Cell Membrane/Transport Drawing Project
PPT
http://www.explorebiology.com/pptAP/2008/CELLS/27Ch06CellMembraneDiffusion2008.ppt
http://www.explorebiology.com/pptAP/2008/CELLS/28Ch49WaterBalance2008.ppt
Video (5 main points per video)
Cell Membranes
http://www.bozemanscience.com/science-videos/2011/9/14/015-cell-membranes.html
Cell Transport
http://www.bozemanscience.com/science-videos/2011/9/14/016-transport-across-cell-membranes.html
Animations (2 main points per animation)
Cell Membrane
http://www.johnkyrk.com/cellmembrane.html
Passive and Active Transport
http://www.glencoe.com/sec/science/cgi-bin/splitwindow.cgi?top=http://www.glencoe.com/sec/science/top2.html&link=http://www.northland.cc.mn.us/biology/Biology1111/animations/transport1.html
How...Videos - Watch: Diffusion, Facilitated, Osmosis, Sodium/Potassium, Receptors Linked Channel Proteins, and Phagocytosis
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html
Receptor Mediated Endocytosis
http://www.sumanasinc.com/webcontent/animations/content/endocytosis.html
Additional Important Animations
http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter6/animations.html
Template for Animation Notes for Blog - 2 main points per animation
Cell Membrane
Passive and Active Transport
Diffusion
Facilitated
Osmosis
Sodium/Potassium
Receptors Linked Channel Proteins
Phagocytosis
Receptor Mediated Endocytosis
Cotransport
Sodium-Potassium Exchange Pump
Endocytosis and Exocytosis
Proton Pump
