Microbio quiz 5 (UV light)

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Last updated 10:43 PM on 4/6/26
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7 Terms

1
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What are the types of UV light?

  • UV-A

  • UV-B

  • UV-C

2
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What is the most detrimental range of UV for bacteria?

  • UV-C (100-280 nm)

3
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What wavelength is DNA and RNA concentration determined?

  • 260 nm

4
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What wavelength is protein concentration determined?

  • 280 nm

5
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What wavelength is most damaging to DNA?

  • 265 nm

6
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How does UV kill bacteria?

  • Creates pyrimidine dimers (bonding of cytosine or thymine on same DNA strand)

7
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Why can Bacillus subtilis withstand longer exposure to UV light?

  • It is an endospore former (once environment is normal, germination occurs?