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...chemistry that underpins antibiotic activity. You looked at the main modes of antibiotic action and learned why these drugs demonstrate selective toxicity. You should now be able to: recognise different types of commonly used antibiotics recall the characteristic features of bacterial and human or animal cells explain why antibiotics have selective toxicity demonstrate...

...chemistry Nowadays, interpreting the behaviour of rocks during their formation and subsequent events requires the chemical composition of their constituent minerals to be quantified. This can be done with modern instrumentation. In particular it can be important to determine the composition of individual grains, and even the variation within a grain. Appropriate modern...

...chemistry on the Moon even wrote a paper entitled ’Don't drink the water' [laughs]. You may have to do some chemistry on the water to make sure you can drink it. NARRATOR Nevertheless, the presence of water in and on the Moon could be the key to reaching new boundaries in human space exploration. CARLIE PIETERS If you have abundant water on the Moon, then you can...

...chemistry and biology experiments...This practical, hands-on course aims to help you start thinking like a scientist by carrying out experiments at home and making scientific observations. You will carry out simple experiments to extract the DNA from fruit or vegetables, observe osmosis in action and bake a potato to destruction! You’ll also investigate how different...