Medicine, 29.09.2020 14:01 Latoyajenjins1789
Students want to investigate how exposure to sunlight affects bacterial growth. They perform the following experiment:
5 nutrient agar petri dishes are prepared following aseptic protocol. A slant culture of S. Marcesens was used to inoculate all 5 dishes using proper streaking
technique. Dishes were then incubated for 24 hours at 37 degrees Celsius. Dishes 2, 3, 4, and 5 were incubated at 5, 10, 15, and 20 lumens of light respectively
Dish I was incubated in the dark Populations were counted and results are in the table below.
The 2
Du
Nber of colonies
Which dish in the study was intended to serve the purpose of testing whether some S. Marcesens colonies can survive without sunlight?
Dishes 1 and 5
Dish 5 only
5
Dish I only
Adishes
Answers: 2
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Students want to investigate how exposure to sunlight affects bacterial growth. They perform the fol...
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