Which activity would most likely increase the mutation rate in a culture of bacteria being grown in a laboratory experiment?

1) Adding more distilled water to the culture
2) Adding excess nutrients to the culture
3) Exposing the culture to a higher concentration of CO2
4) Exposing the culture to ultraviolet radiation

The answer should be 4) as it is known that uv radiation might have an effect on dna, thus causing mutations such as skin cancer in humans.

Answered by joporto | 2024-06-10

Exposing a culture of bacteria to ultraviolet radiation is the activity most likely to increase the mutation rate, due to UV radiation's ability to cause DNA changes. Option 4)exposing the culture to ultraviolet radiation.

The activity that would most likely increase the mutation rate in a culture of bacteria being grown in a laboratory experiment is exposing the culture to ultraviolet radiation. This is because UV radiation is known to be a potent physical mutagen that can cause changes in DNA, increasing the rate at which mutations occur. This has been demonstrated in experiments with yeast cultures, where exposure to UV-C radiation can cause significant mutagenesis even in short durations, resulting in mutated cells with observable changes, such as the ade-2 mutant yeast strain that changes color when exposed to UV-C. Similarly, bacteria have also been shown to have increased mutation rates when exposed to chemical or physical mutagens, with UV radiation being a classic example that can induce a higher mutation rate.

Answered by DestinyHopeCyrus | 2024-06-24

The activity that would most likely increase the mutation rate in a culture of bacteria is option 4) Exposing the culture to ultraviolet radiation. UV radiation can cause direct DNA damage, leading to mutations. In contrast, the other options do not significantly influence mutation rates.
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Answered by joporto | 2024-10-31