Cell Membrane!!
Cell Membranes are composed of 2 Layers of Phospholipids = Phospholipid Bilayer Heads = love water Tails = hate water Middle = oily substance that keeps water out
Soap + Oil
Cell Membrane = Phospholipid Bilayer
The cell membrane is semi-permeable: allows substances to pass based on size DEMO!
What enters and exits cells? http://www.teachersdomain.org/asset/tdc02_int_membraneweb/ Carbon Dioxide Water Small molecules can pass through the phospholipid bilayer; but how do the big molecules get into cells? Oxygen Glucose Enzymes
The Fluid Mosaic Model of The Cell Membrane Fluid: moves easily Mosaic: made of phospholipids, carbohydrates, protein channels
Cell Transport Jigsaw: Each group will read about a different type of cell transport You are to become an EXPERT in your topic. While reading: Pull out vocab words and define. Take notes on important info. Summarize the transport type. You will then switch groups and become the teacher of that topic in your group. You are fully responsible for the people in your group learning your section of notes. Group 1: Diffusion Group 2: Osmosis Group 3: Facilitated Diffusion/Ion Channels Group 4: Sodium Pumps Group 5: Exo/Endocytosis