Antibiotic Sensitivity−Kirby-Bauer Diffusion Test

  A. Write a lab report about the Antibiotic Sensitivity−Kirby-Bauer Diffusion Test experiment in which you do the following: 1. Explain why selective toxicity is an important feature of antibiotics. a. Discuss the relative benefits of broad-spectrum and narrow-spectrum antibiotics. Note: The explanation from part A1 and discussion from part A1a belong in the introduction section of the lab report. 2. Describe the steps you followed to complete the Kirby-Bauer diffusion test. Note: Include any changes from the normal protocol that might have been incorporated into your experiment. Note: The description from part A2 belongs in the materials and methods section of the lab report. 3. Record the observed results of the Kirby-Bauer diffusion test, including the zone of inhibition measurement and interpretation (e.g., resistant, intermediate, susceptible) for each antibiotic using the attached “Data Table.” Note: The explanation from part A3 belongs in the results section of the lab report. 4. Based on your recorded results from the Kirby-Bauer diffusion test, explain whether each of the following antibiotics would be a reasonable choice for treating S. epidermidis: • penicillin • novobiocin • gentamicin