#27: Ultraviolet Light What length of time is required to destroy the vegetative bacteria tested? Organism Time 2. What

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27 Ultraviolet Light What Length Of Time Is Required To Destroy The Vegetative Bacteria Tested Organism Time 2 What 1 (42.92 KiB) Viewed 49 times

#27: Ultraviolet Light What length of time is required to destroy the vegetative bacteria tested? Organism Time 2. What time is required for Saccharomyces cerevisiae? 25 -2 hours 3. Explain any differences noted in the times above, relating these results to the structure of the organisms. 4. What time is required to destroy B. subtilis endospores? Try to express it as " times longer than vegetative cells." 5. Why was SAB used for Saccharomyces? 6. Why did you cover of the plate during exposure? To block vadiation and provide a confuel comparison to the effects of the UV lig 7. Discuss specifically how UV light halts the growth of organisms. Bright light forestall the development of microscopic organisi by harming their DNA 8. What harmful effects does UV light have on human tissues? How can this be avoided? Kinks, vugged Skin, uver spots, activic revatosis, UV becams com live wise canso eye tissues, can be avoided by sunscreen. 9. Record the range in nm of UV light: -400 nm What wavelength of light is specifically called "germicidal"? UVC 10. Discuss some ways that UV light is used in the everyday world to control microbial growth. Include at least three for full credit!! a dispensing with microbes b. making fluorescent impads, c. Velieving inks and gaps 38