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Re: A level Investigation - help required please!



Hi Madeleine! Your investigation is straightforward - create a lawn of 
bacteria eg. E.coli (don't use moulds!) by swirling a pipette full of the 
culture on top of an agar plate, then add discs soaked in toothpaste. 
Incubate, then look for zones of inhibition (clear areas with no 
growth). Measure them and do some stats!