Important Dates Wednesday/Thursday 10/28-10/29/2015: Membrane and Molecular Transport Exam Friday 10/30/2015: Lab Report due for Grape Lab Monday 10/19/2015 Agenda: Notes on Diffusion Activity: Cell Membrane Foldable Activity: Cellular Membrane and Molecular Movement due Monday 9/15/2014 for 25 Points Homework: Finish Cell Membrane and Molecular Movement Worksheet

Other Stuff in the Cell Membrane! The cell membrane has a lot of stuff in it besides phospholipids. Some other stuff in the cell membrane are PROTEIN CHANNELS, RECEPTOR MOLECULES, AND CHOLESTEROL.

Cell Membrane Foldable  Draw and label picture of the cell membrane  Make sure to add color and label all parts of the cell membrane (Top Inside Flap of foldable)  List the functions of the cell membrane  Use the vocabulary you learned from today’s notes (Bottom Inside Flap)  Related Terms for Cell Membrane  What are other terms used to describe the cell membrane? (Bottom Inside Flap)

Other Stuff in the Cell Membrane! What that looks like: Protein channel Receptor molecule Cholesterol

Protein Channels Protein channels let molecules that can’t get through the cell membrane into the cell. We will talk about this more soon.

Receptor Molecules Receptor molecules receive signals from the rest of the body. We will talk about this more when we talk about hormones.

Cholesterol Cholesterol strengthens the cell membrane so that a cell can keep its shape!

DIFFUSION Think about it…: What would happen if someone farted in one corner of the room?!!!

Passive Transport  Requires NO energy  Particle go from high to low concentration  Three types of passive transport: 1.Diffusion 2.Facilitated Diffusion 3.Osmosis

What is Diffusion?  Diffusion is the movement of any substance from a higher concentration to a lower concentration until a balance is reached  Examples:  Spraying perfume in a room  Food coloring in water

Diffusion Across a Membrane  Molecules will diffuse through a membrane until there is an equal amount on both sides. (Equilibrium)

What Happens Next?  After equilibrium has been reached, the molecules keep moving, but the balance remains the same.

Selectively Permeable Membrane  Molecules that are too big, can’t get through

Facilitated Diffusion If a molecule is too big to get across the cell membrane, it can get inside the cell by going through a protein channel. hill.com/sites/ /student_view0/chapter2/ animation__how_facilitated_diffusion_works.html hill.com/sites/ /student_view0/chapter2/ animation__how_facilitated_diffusion_works.html

END for 9/12 & 9/13

Tuesday 10/20/2015 Agenda: Osmosis Activity: Osmosis Reading Activity Homework: Annotation of Osmosis Reading and Mind Map due Wednesday/Thursday 10/21-10/22/2015 for 30 Points Important Dates Wednesday/Thursday 10/28-10/29/2015: Membrane and Molecular Transport Exam Friday 10/30/2015: Lab Report due for Grape Lab

Q1 WK8 Wednesday/Thursday 10/19-10/20/2015 Agenda: Osmosis Activity: Osmosis Lab and Rough Draft Write-Up Homework: Finish Typed Lab Report (Due Friday 10/30/2015) Important Dates Wednesday/Thursday 10/28-10/29/2015: Membrane and Molecular Transport Exam Friday 10/30/2015: Lab Report due for Grape Lab

Osmosis Grape: ROUGH DRAFT  Everyone will write up an osmosis grape rough draft.  You have the rest of the class period to write up your rough draft.  The final draft of your lab report should be typed and is due next Friday, 10/30/2015

Important Dates! Tuesday 9/23/2014: 1.Grape Lab Report Due 2.Cells Study Guide Due Q1 WK8 Friday 10/23/2015 Agenda: Osmosis Activity: Osmosis Lab and Rough Draft Write-Up Homework: Beaker Worksheet and notes due Monday 10/26/2015 for 20 Points