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Cerrena
2 months ago
14

1. Laura uses a cotton swab to collect microorganisms from a hand rail and streaks a plate. On the fourth day of incubation, she

does not observe visible microbial growth. Given that microorganisms are literally everywhere, give at least three reasons why Laura may not have observed microbial growth?
Biology
1 answer:
-BARSIC- [2.5K]2 months ago
3 0

Answer:

Several factors might explain why Laura did not see any microbial growth after four days of culturing microorganisms in Petri plates:

1. Laura might not have used the proper broth medium, possibly failing to maintain the right pH and salt levels.

2. The microorganisms could have lacked suitable conditions for growth.

3. The source of the bacteria might have perished after collection, leading to cell lysis, which would prevent visibility.

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