Abstract
The moderately halophytic bacterium Vibrio natriegens is recommended for senior school investigations into both microbial population growth rates and mortality as a result of UV radiation. A protocol for investigating the phenomenon of photo-reactivation is described. The use of micropipette tips is suggested as a means of carrying out serial dilutions on a micro-scale, thus reducing the cost of the technique in terms of time and consumables. A range of realistic suggestions for investigations by senior school pupils is made.
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