THOSE MAGIC MEMBRANES

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THOSE MAGIC MEMBRANES

• By Arthur Siebens
• To the tune of LaBamba/Twist and Shout

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• How do things get into cells?
• How do things get out?
• Transport across cell membranes
• Is what this songs about.

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• Diffusion, osmosis
• Active transport, too.
• To make your cells and organs work right
• The right solutes must get through.

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• Oh, those magic membranes
• In each and every cell
• Differences between solutes may be small
• But membrane transporters can tell.

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• Oh those magic membranes!
• They let the good stuff in
• Get the bad stuff out
• Through transporters made of protein
• Theres lots of different routes.

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• Membranes are mainly made of lipid
• Most solutes cant penetrate
• Proteins transport specific solutes
• Many change their shape.

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• Facilitated diffusion
• High concentration to low.
• In cotransport a solute going downhill
• Moves another uphill as it goes.

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• Theres also active transport
• And that takes energy
• Solutes are moved uphill
• Energy from ATP.

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• Oh those magic membranes
• In each and every cell
• Differences between solutes may be small
• But membrane transporters can tell

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• If solutes cant cross a membrane
• But water can diffuse
• It will cross til equilibrium
• Osmosis is when water moves

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• Oh, those magic membranes
• In each and every cell
• Differences between solutes may be small
• But membrane transporters can tell
• Oh those magic membranes!
• Yeah!