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Bacteria resistance to antibiotics Featured science projectScience project video


With each generation, the inhibition zone grows smaller in diameter. Also, the higher the concentration of the antibiotic used, the bigger the diameter of the inhibition zone.

Ampicillin concentration The diameter if inhibition zone in Petri dish (mm)
  1st generation 2nd generation 3rd generation 4th generation 5th generation
1mg 24 22.5 19 15.5 11.5
3mg 22.5 21 20.5 18 16.5
5mg 21.5 21 20 19 18

Use the below graph to plot the results in the above table.

bacterial resistance science project

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Complexity level:
Project cost ($):
Time required:
1 day for preparation, 20 days for this science project experiment
Material availability:
Access to laboratory equipment (eg. petri dishes)
Safety concerns:

Always follow laboratory safety guidelines and always practice sterile technique when handling microbes. Never have any food or drink at your workstation and always thoroughly wash your hands with disinfectant soap or alcohol before leaving your workstation. Always dispose of used material in a biohazard bag. If none are available, the bacteria should be destroyed with bleach before being disposed of.