Online Reviews at GHS

Cells (Structure, Function & Processes):

Plasma Membranes

Plasma Membrane Structure (Fluid Mosaic Model): (BBC Education)

Phospholipid Membranes:

Phospholipid Membranes:

Passive Transport

Diffusion

Osmosis

Osmosis in an Isotonic Environment: (www.cat.cc.md.us) -

Osmosis in a Hypertonic Environment:

Osmosis in a Hypotonic Environment:

Facillitated Diffusion (no ATP used......from high to low concentration)

Transport (In french, but does a good job illustrating diffusion, passage through protein channels, cotransport, Na/K pumps, endocytosis & exocytosis.)

Active Transport

Active Transport: (McGraw-Hill) - 4 Animations & Audio of CoTransport, Na/K Pump, Endocytosis & Exocytosis, and Proton Pump.

Sodium/Potassium Pump: (No text with it but a good animation of this important form of Active Transport)

CoTransport (passage of Na into the cell helps bring Glucose (G) in too!)

Sodium/Potassium Pump combined with Cotransport (The sodium/potassium pump is often coupled with Cotransport to power the active transport of glucose into a cell)

Pinocytosis:

Phagocytosis: Shows both an animation as well as 2 short movie clips of amoebas ingesting other organisms via phagocytosis.

Receptor-mediated Endocytosis: The molecule to be moved into the cell must match up with a receptor on the membrane surface to be moved in.

Exocytosis:

Exocytosis: (BBC Education)