AQA Required Practical - Biology. Investigate the effect of antiseptics or antibiotics on bacteria

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This is a video made in my Science Lab demonstrating how to produce an uncontaminated culture of bacteria and testing different antibiotics to determine which are most effective at slowing the growth of E.Coli bacteria.

Usually, my students would do this experiment but due to COVID restrictions, I had to demo it. Sound and picture quality is not the best but I hope you find the video useful in revising for GCSE Biology. Remember to check out my Required Practical Playlist for ALL 10 practicals needed for your GCSE.
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proper banger sir, but the mic is a bit inaudible near the 2:30 mark

tay
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What concentrations are your streptomycin and penicillin discs?

hannahbaxter_