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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
Plasma Membrane Notes. CHARACTERISTICS: Maintains homeostasis (balance with environment) Selective permeability – allows some molecules into the cell.
Chapter 7: Cells and Their Environment. Cell Membrane 1. Function Selectively (semi-) permeable a. Some substances can pass through but others cannot.
Diffusion Through a Membrane State Lab Part 1 – Build a model cell and demonstrate diffusion across a selectively permeable membrane *Binds to helical.
Plasma Membrane Outer boundary of a cell Gatekeeper - controls what enters and leaves the cell.
MOVING THROUGH MEMBRANES Basic Ideas of Biology Unit 1.
Water: The Facts Water is possibly the most important compound in living organisms. Water consists of 1 atom of oxygen combined with 2 atoms of hydrogen.
Membranes in cells Chapter 2.3. Objectives of unit: Understand the structure and properties of the plasma membrane Investigate the properties of plasma.
Plasma Membrane. Function Allows nutrients to pass into and out of the cell. Allows nutrients to pass into and out of the cell. Maintains homeostasis.
Chapter 5 A Closer Look At Plasma Membranes Chapter 5 A Closer Look At Plasma Membranes Honors Biology.
AP Biology The Cell Membrane AP Biology Overview Cell membrane separates living cell from nonliving surroundings thin barrier = 8nm thick Controls.
The Cell Membrane and Movements of Molecules The Plasma Membrane The Plasma Membrane (aka cell membrane) The Plasma Membrane (aka cell membrane) Boundary.
Cell membranes and exchange of material HBS 3A. Exchange of material Occurs at the cell membrane Involves the intake of essential materials eg nutrients.
Pre-AP Biology Water Properties (2.2) Part 1. Earth 2/3rds covered by water.
Chapter 7 Membrane Structure and Function Days8 Objectives -You will understand that membranes are fluid -The structure results in a semi-permeable membrane.
1) Name the major molecules that make up the cell membrane. How thick is the membrane? 2) How does the fluid mosaic model proposed by Singer & Nicholson.
Regents Biology Cell Membranes & Movement Across Them.
* Protects the cell and regulates what comes in and out * Cell Membrane.
AS Biology. Foundation. Cell membranes and Transport1 AS Biology FOUNDATION Chapter 4 CELL MEMBRANES and TRANSPORT Visit
Types of Cells Cell Functions Membrane Proteins.
Johnson - The Living World: 3rd Ed. - All Rights Reserved - McGraw Hill Companies Cells Chapter 4 Copyright © McGraw-Hill Companies Permission required.
Section 3-3, 3-4, 3-5 Movement across the c ell membrane Write everything that is underlined.
Biological Membranes. Biological membranes Biological membranes Complex, dynamic structures made of lipid and protein molecules Complex, dynamic structures.
Cell Transport Study Guide. 1. Which forms of transport do NOT require energy? Diffusion Osmosis Facilitated Diffusion *All of these are passive!
Cell Membrane & Cellular Transport Homeostasis – the maintenance of internal stable conditions The cell membrane keeps the cell in balance.
Organelles BiomoleculesMembranes and Osmosis BiochemistryWhich one is not like the others? $10 $20 $30 $40 $50 Cells Jeopardy.
CP BIO: Ch. 7 The Cell Membrane and transport across the membrane.
Aim: How cell membrane organized? HW #10 1. Complete the handout on the cell Do now: You have 5 min. 1.Explain how the following structures: a.Nucleolus.
1 The Plasma Membrane The Plasma Membrane - Gateway to the Cell.
Cell Environment Notes p Selectively permeable Some things can pass through the cell membrane & some cant Some things can pass through the cell.
Chapter 3 Water and the Fitness of the Environment.
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