Which of the following choices is the method we used to evaluate the effect of UV light exposure on E coli and B subtilis in the

Question

Which of the following choices is the method we used to evaluate the effect of UV light exposure on E coli and B subtilis in the lab We divided one NA plate in half and swabbed one culture per side Then exposed it to the UV light We divided one NA plate in half swabbed the entire surface of the agar using the inoculum from a pure culture and exposed only one side to the UV light We turned on the UV light and let the plates sit in the cabinet with lids on We turned on the UV light and let the exposed swabbed areas under the light for different amounts of time True True True True

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