Question: 4. Which Bacterium Appears To Be More Resistant To UV Light? Why Do You Suppose This Is True? Which Feature Of This Bacterium Is Not Seen In The Other? Exposure Time Bacillus Subtilis Covered Exposed Staphylococcus Aureus Covered Exposed +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ …

4. Which bacterium appears to be more resistant to UV light? Why do you suppose this is true? Which feature of this bacterium is not seen in the other? Exposure time Bacillus subtilis Covered Exposed Staphylococcus aureus Covered Exposed +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ +++ ++ +++ +++ 0 +++ +++ + O seconds O seconds O seconds O seconds O seconds 10 seconds 10 seconds 10 seconds 10 seconds 10 seconds 10 seconds 10 seconds 10 seconds 20 seconds 20 seconds 20 seconds 20 seconds 20 seconds 20 seconds 20 seconds 40 seconds 40 seconds 40 seconds 40 seconds 40 seconds 40 seconds 40 seconds +++ +++ +++ +++ +++ ++ +++ 0 + +++ +++ 0 ++ +++ +++ +++ +++ +++ +++ +++ +++ +++ 4. 0 ++ +++ +++ +++ + +++ +++ + +++ OOOO +++ + +++ +++ +++ 1 + +++ + +++ +++ +++ + +++ 0 +++ 0 0 +++ ++ +++ +++ 0 +++ + +++ 0 0 +++ +++ ++ +++ 0 +++ ++ +++ . +++ 0 +++ +++ +++ 0 +++ ++ +++ 0 +++ 40 seconds 75 seconds 75 seconds 75 seconds 75 seconds 75 seconds 75 seconds 75 seconds 2.5 minutes 2.5 minutes 2.5 minutes 2.5 minutes 2.5 minutes 2.5 minutes 2.5 minutes 2.5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 7.5 minutes 7.5 minutes 7.5 minutes 7.5 minutes +++ ++ +++ +++ +++ +++ +++ ++ + +++ + + + +++ +++ +++ ++ +++ + + +++ ++ ++ 0 ++ +++ + +++ + +++ + +++ ++ +++ +++ +++ + + + + +++ H toto +++ +++ +++ +++