Evaluating antiseptics.pptx
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Items in this lesson
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Evaluate experimental data and comment on it’s reliability.
Title: Preventing microbial growth
Stimulus question:
Which disinfectant is the most effective?
Explain how the data from the petri dish (culture of bacteria) tells you this.
Give one hazard you would need to control in this experiment.
Which method is commonly used in aseptic techniques?
Washing with soap
Drying with cloth
Chemical disinfection
Flame sterilization
Recording data:
Two measurements of each clear zone (zone of inhibition)
Disc soaked in antiseptic 1
Disc soaked in antiseptic 2
Disc soaked in antiseptic 3
An investigator placed paper discs containing different concentrations of an antibiotic onto a culture of bacteria in a petri dish.
