Year 12 VCE Biology Students Investigate the Effectiveness of Antibiotics

Last week the Year 12 VCE Biology students commenced their experimental investigations into the effectiveness of antibiotics. As part of this school-assessed coursework, students need to design, conduct and then report on an investigation. Specifically, students are trying to determine the minimum concentration of ampicillin which effectively limits the growth of the gut bacteria, E. coli. This has involved culturing (growing) bacteria on nutrient agar plates and performing serial dilutions to alter the concentration of ampicillin. The bacteria are then grown in the presence of antibiotic disks and the clear zones that form around the disks are measured to determine a minimum inhibitory concentration. Students will present their findings as formal scientific posters.

by Claire Stanner, Science and Biology Teacher and Year 9 Pastoral Mentor

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