Get On Task MT 13 Passive Transport TOPIC: MY GOAL:

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Presentation transcript:

Get On Task MT 13 Passive Transport TOPIC: MY GOAL: Fri 12.07.12 MT 13 Passive Transport TOPIC: MY GOAL: Get On Task I will discover the meaning of ISOtonic, HypOtonic, Hypertonic #1 PICK UP Lab Sheet! Write your NAME & PD at TOP, RIGHT Think about 2 group members to work with you #2 LOOK OVER READING from ISN pages 107 AND 109 Active/Passive Transport Concentration Gradient Sodium Potassium Pump Protein Channels Diffusion/Osmosis/ Facilitated Diffusion Dynamic Equilibrium Energy Inhibitors Selective Permeability Osmosis/Diffusion

Selectively Permeability of the Cell Membrane Selective Permeability

Transport Through a Cell LAB AS A CLASS Demo #1 Raman Noodles DRY vs WET over night What happened to Raman when in water…? How did the mass change? Demo #2 Potatoes 1cm vs 2cm vs 3cm  Covered in blue stain Look at Data Table, Observations Answer questions…

Transport LAB, cont. GROUPS OF 3 Activity #3 Grapes READ Background FIRST… NOW Under PROCEDURE, cross out #1 If not done already  NUMBER/LABEL your cups Look at the DATA TABLE to do this! Identify your cups as YOURS…! To MASS the grapes – use the ‘boat’…. LISTEN! When finished, place all 5 cups on counter under your classes Post-It notes… Activity #4 Gummy Bears Same process as with grapes  See ABOVE!!!

Notes… ISN p.108 Q: Why are cells so small? What factors limit cell size to microscopic? A: The ratio of cell membrane Surface Area to Cell Volume is a factor that limits cell size… AS CELLS INCREASE IN SIZE THE SA/V RATIO DECREASES. If a cell grows too big then its volume will not have enough surface area to support its needs by diffusion. http://www.youtube.com/watch?v=wuXSEOKNxN8&safety_mode=true&persist_safety_mode=1&safe=active

Be the change you wish to see in the world Study? A little bit…? HOMEWORK Be the change you wish to see in the world 6 6