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Biology Share-A-Thon NSTA Annual Conference March 30, 2008 Presenter: Kristen Kohli
Properties of Water Cohesion demonstrations: Cohesion demonstrations: –Penny drop contest –Cutting water with toothpicks
Properties of Water Adhesion demonstrations: Adhesion demonstrations: –Paper towel clean up from cohesion demos –Long-distance water pouring
Properties of Water Water expands as it freezes: Water expands as it freezes: –Ice cubes float –Blown out water bottle
Properties of Water Hydrophobic substances Hydrophobic substances
Properties of Water Hydrophilic Substances Hydrophilic Substances –Insta-Snow® or sodium polyacrylamide –Disposable diapers –Addition of salt
The Fluid-Mosaic Model Density demonstration bottles Density demonstration bottles Structure of a phospholipid Structure of a phospholipid
The Fluid-Mosaic Model Phospholipid arrangement challenge Phospholipid arrangement challenge
The Fluid-Mosaic Model
Osmosis Activities Diffusion through a semi-permeable membrane Diffusion through a semi-permeable membrane Potato osmosis Potato osmosis Card practice Card practice
Review Activities – Informational Pamphlets Informational Pamphlets Informational Pamphlets
Review Activities – Informational Pamphlets The Cover The Cover
Review Activities – Informational Pamphlets Attention Grabber – the inner fold Attention Grabber – the inner fold
Review Activities – Informational Pamphlets The meat & potatoes – the inside The meat & potatoes – the inside
Review Activities – Informational Pamphlets Works Cited – The back cover Works Cited – The back cover
Review Activities – Team Posters
Review Activities – Topic Folders
The cover The cover
Review Activities – Topic Folders
Kristen Kohli March 12, 2011.
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Chemistry of Life Properties of Water.
Introduction to Cell Transport and the Cell Membrane.
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Cell Biology standard 1a Students know cells are enclosed within semipermeable membranes that regulate their interaction with their surroundings. Unit.
AP Biology Why are we studying water? All life occurs in water All life occurs in water –inside & outside the cell.
Cell Membranes are composed of 2 Layers of Phospholipids = Phospholipid Bilayer 2 layers of phospholipids Heads = love water Tails = hate water Middle.
The Cell Membrane What does the cell membrane do? Separates living cell from aqueous environment Controls traffic in & out of the cell –allows.
Let’s look at one example involving osmosis. Osmosis is the diffusion of water across a semi permeable membrane such as a cell membrane. A semi permeable.
AP Biology Chapter 3. Water— The Elixir of Life!
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Plasma Membrane & Cellular Transport
AP Biology Chemistry of Life Properties of Water.
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Pre-AP Biology Water Properties (2.2) Part 1. Earth 2/3rds covered by water.
Chapter 7 / Chapter 8 Membrane Structure and Function.
Cell Membrane & Transport Fluid mosaic model - Lipids, proteins & carbohydrates Membrane trafficking - Passive Transport - Active Transport - Bulk.
AP Biology The Cell Membrane AP Biology Overview The cell membrane separates the inside of a living cell from its surroundings Function to maintain.
Cell Transport. Maintaining Balance Homeostasis – process of maintaining the cell’s internal environment Cannot tolerate great change Boundary between.
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