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Be careful with wikipedia, it's a very good site but don't believe all it says! If you can get your hands on a copy of Brock biology of micro-organisms, its what I use in my degree for all things...

I use sciencedirect.com a lot. If its to do with science, someone's published a journal on it for science direct! :)

I know the jamaican click beetle can because that was the beetle they found the luciferin substrate in, which was later found in the firefly. Whether all the click beetles can I don't know - but...

how do you work out just the normal IV of a sample? I've been given an equation to work out the average IV for the sample (1.269*difference between blank and sample titre/weight of fat or oil) but...