Any microbe that enters a normally sterile location or a compromised host can be harmful.
How were results evaluated in this experiment?
antibiotic, or whether the results are intermediate.
If an "intermediate" result is obtained for an antibiotic, what should the doctor (or vet) do to treat the patient? Why?
antibiotic is effective against the bacterium or not.
Will all antibiotics be equally effective against Gram-positive and Gram-negative bacteria? Why or why not?
No. Cell wall structure and permeability and species-specific enzymes affect susceptibility.
Why isn't one antimicrobial agent equally effective against all three bacteria used in this experiment?
Is the disk-diffusion method measuring bacteriostatic or bactericidal activity? Explain.
In which growth phase is an organism most sensitive to an antimicrobial agent? Why?
Why is the disk-diffusion method not a perfect indication of how the drug will perform in vivo (i.e., in the patient's body)? What are two (2) factors that could affect this?