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You take a sample from a growth-free portion of the zone of inhibition in the Kirby-Bauer test and inoculate it onto a plate of nonselective medium. What does it mean if growth occurs on the new plate? 

A teacher walking through her first-grade classroom pauses to pick up a used tissue that had ended up on the floor instead of in the waste basket. Unfortunately, after discarding the tissue, she doesn’t immediately wash her hands, and acquires a strain of rhinovirus. Several days later she begins to experience symptoms of a cold. Based upon this scenario, please select the mode of disease transmission demonstrated here. 

How is the name of the bacterium “proteus vulgaris” correctly written based on the binomial nomenclature? 

Describe what happens at each step in the Gram stain. 

Explain active, passive, natural, and artificial immunities.

The following table shows the results of an antibiogram. Which of the antibiotics would NOT be recommended to treat the infection caused by S. aureus? Drug  Zone Size (mm) Required for Susceptibility(S) Zone Size (mm) Required for Resistance(R) Example Results for staphylococcus Aureus  Evaluation Bacitracin >13 18 18 13 18 17 29 12 15 12 19

List 4 ways a newborn can acquire normal microbiota. 

Explain why it is safer to take antibiotics that target the cell wall of bacteria than antibiotics that target the cytoplasmic membrane. 

List 3 structures found in eukaryotic cells but not in prokaryotic cells and their functions?

You are a scientist studying a marsh area contaminated with PCBs, toxic chemical compounds found in industrial waste. You look at a water sample using light microscopy and discover motile single cells that are about 1 micron in circumference. You hypothesize that these microbes might be useful in cleaning up the toxic waste. Since there is no instruction book for how to culture them, how might you go about creating a growth medium for them?