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Biology 12 Budd: Cell membrane & transport

Websites

Parts of the cell membrane
How diffusion works?
How osmosis works?
Why cells shrink or swell?
Osmosis in red onion
Click on Watch osmosis in red onion.l
Red blood cells in different solutions
Facilitated transport
Simple diffusion and facilitated diffusion
Choose the "animation" tab, then "narrated", watch the first two animations only
Molecular workbench
Don't download the installation, go to the Diffusion picture at the bottom of the page
How different molecules enter the cell (interactive)
Endocytosis and exocytosis
Click on the endocytosis and exocytosis link
Why cells cannot continue to get bigger and bigger?
Why don't cells get big (looking at surface area to volume ratio)?
Students explaining why cells cannot continue to increase in size
Passive and active transport

Answer keys

Garibaldi Secondary School, Maple Ridge, British Columbia, Canada