Based on figure 19-4, what is the student probably trying to test?
Answer (2)
The student is trying to see which substance (disinfectant 1, 2, 3, or the distilled water) can disinfect the most.
The student is testing the effectiveness of different disinfectants against E. coli using the disk diffusion method. They will measure the zones of inhibition to determine which disinfectant is most effective. The experiment involves setting up agar plates, applying disinfectants, and analyzing bacterial growth inhibition.
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