You go camping and you run out of bottled water. You decide…

You go camping and you run out of bottled water. You decide to fill up the water bottles in the stream since the water looks clear. The next day you start to feel ill and you send the water off for testing. The results state there is Giardia (a microbe) in the water, which means you likely got sick how?

The following data was obtained by incubating Staphylococcus…

The following data was obtained by incubating Staphylococcus aureus (a gram-positive bacteria) in nutrient medium with disinfectant for 24 hours (Initial), then transferring one loopful of that culture to non-selective nutrient medium (subculturing). (+ = growth; – = no growth) Using the above information, which disinfectant is the most effective at stopping bacterial growth initially?