Question
Microbiology Study Guide
29. Which of the following is true for why penicillin cannot be used to treat atypical pneumonia caused by Mycoplasma pneumoniae? A. Mycoplasma is a virus. B. Mycoplasma lacks DNA and RNA. C. Mycoplasma lacks cellular structure. D. Mycoplasma lacks cell wall. E. Micoplasma lacks cytoplasmic membranes. 30, Physicians do not prefer to treat patients with a broad-spectrum antimicrobial chemical because it can lead to serious, subsequent superinfections by one or more members of the normal microbiota. A. True B. False 31. Most regions and surfaces of the human body lack bacteria and must be kept sterile. A. True B. False 32. In order to treat diseases, physicians depend on pathology labs to study specific pathogens and run sensitivity test to assess the effectiveness of the antimicrobial agents on them. Which of the following test is performed to elassity the pathogens into susceptible, intermediate or resistant to each drug tested? A. Diffusion susceptibility or Kirby-Bauer test B. Minimum inhibitory concentration (MIC) test C. Minimum bactericidal concentration (MBC) test 33. Use of probioties is becoming more popular! Which of the following is true for probiotics? A. Probiotics are antimicrobial agents used to treat infections B. Probiotics are extracts of bacteria that are part of the normal microbiota. C. Probiotics is an alternate term for antibiotics. D. Probiotics are beneficial microbes introduced in the body to help prevent diseases E. Probiotics is just a myth when it comes to treating infections and promoting human health. 34. Most common way for bacteria to become resistant to an antimicrobial agent is by acquiring plasmids with R gene. A. True B. False 35. All of the following are ways to treat a patient with resistant bacteria types exeept withdraw the use of antimicrobial drugs. B. Use sufficiently high concentration of the drug. C. Use a combination of drugs D. Use new chemical variation or synthetic drug complementary to the shape of microbial proteins. E. Use the drug for longer period of time. 36. All of the following are prokaryotic except A. Viruses B. Bacteria C. Archaca
Explanation / Answer
Ans 29 : D) Mycoplasma lacks a cell wall
Since the Mycoplasma lacks cell wall , they are resistant to penicillin . So they are treated with antibiotics such as microlide , fluoroquinolone or tetracycline.