How to teach cell signalling

Here's one of my favourite analogies. Start your lesson off with this Slight Smile

Back in the early 1990's, Sony introduced the personal Walkman radio.

http://www.techviva.com/wp-content/uploads/2009/11/Sony-SRF-59-FM-AM-Radio-Walkman.jpg

Everyone I knew had one of these gadgets - they were like the iPods of today. Wherever people went, they took their radio with them, the gym, inside their car, at the mall, etc. I, however, didn't have the money to afford one. Now, as you know, radio waves are all around us - that is, even if you don't have a radio, BUT in order to actually read a radio wave (a signal), you need this device (a radio of some sort). Using this idea, a radio (the antenna) is like a receptor on a cell (the radio hardware) that transmits a sign to the speakers (proteins inside) to produce a sound. Some cells in our body react to different signals because they may not have the same receptors as other cells do. This is why a radio can read radio waves and not microwaves, for instance. Every cell is unique and although the radio waves are always around us, as are ligands that circulate our blood, if we don't have the proper receptor to read the signal, it won't be read or transmitted.

Hope you enjoyed it Slight Smile

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How to teach cell signalling

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