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Osmosis and Diffusion, Cell Biology - Biology - Lecture Slides

Slides, Biology

Post: January 26th, 2013
Description
These are the lecture slides of Biology. Key important points are: Osmosis and Diffusion, Cell Biology, Cell Membranes, Functions of Membranes, Maintain Ion Concentrations, Selectively Permeable, Phospholipid Bilayer, Fluid Mosaic Model, Blood-Brain Barrier
These are the lecture slides of Biology. Key important points are: Osmosis and Diffusion, Cell Biology, Cell Membranes, Functions of Membranes, Maintain Ion Concentrations, Selectively Permeable, Phospholipid Bilayer, Fluid Mosaic Model, Blood-Brain Barrier
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sangeeta

sangeeta
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Contents
Cell Membranes Osmosis and Diffusion Docsity.com Functions of Membranes 1. Protect cell 2. Control incoming and outgoing substances 3. Maintain ion concentrations of various substances 4. Selectively permeable - allows some molecules in, others are kept out Docsity.com Phospholipid Bilayer Docsity.com Fluid Mosaic Model Docsity.com Blood-Brain Barrier • Allows some substances into the brain, but screens out toxins and bacteria • Substances allowed to cross include: water, CO2, Glucose, O2, Amino Acids, Alcohol, and antihistamines. HIV and bacterial meningitis can cross the barrier. Docsity.com Solutions • Solutions are made of solute and a solvent • Solvent - the liquid into which the solute is poured and dissolved. We will use water as our solvent today. • Solute - substance that is dissolved or put into the solvent. Salt and sucrose are solutes. Docsity.com Methods of Transport Across Membranes 1. Diffusion 2. Osmosis 3. Facilitated Diffusion 4. Active Trans..

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