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- Technically speaking, which antimicrobial drugs are produced naturally? Biofilms Antibiotics Semisynthetics SyntheticsHow can some bacteria become resistant to antimicrobial drugs?Could an organism that is susceptible to an antimicrobial agent in laboratory testing fail to respond to it when that drug is used to treat the patient? Explain.
- The first step for directly linking a microbe to a specific disease according to Koch's postulates is to O isolate microbes from the blood of healthy animals. obtain a sample of blood or other body fluid from a diseased animal. O culture the blood or other body fluid from a discased animal using nutrient medium. O inject a sample of blood or other body fluid from a diseased animal into a healthy animal. O compare the blood of a sick animal to blood obtained from a healthy animal.What are the characteristics of an ideal antimicrobial agent?A chemical, produced by a microbe to inhibit the growth of other microbes, is isolated and then modified in a chemical reaction in the laboratory. Which of the following terms would most accurately apply? O Synthetic O Antibiotic O Phenolic O Microbistatic O Opportunistic
- Aminoglycosides and ß-lactams are commonly used antibiotics. Write a short account for both antibiotics respectively regarding their antibiotic classes, ways of inhibiting microorganisms and their specificities.Some bacteria produce the enzyme penicillinase, which breaks the beta-lactam ring in the penicillin molecule and converts it into penicilloic acid, which is harmless to bacteria. This is an example of which of the following mechanisms of antibiotic resistance? which option below is the answer? Destruction or inactivation of the antibiotic by the microbe Preventing penetration to the target site within the microbe Alteration of the drug’s target site(s) within the microbe None of the other four answers are correct Rapid ejection (pumping) of the drug out of the microbial cellThe type of antimicrobial drug that would be most likely to have toxic effects in humans based on the premise of selective toxicity when treating microbial infection would be a drug that O 1) inhibits the synthesis of the cell wall O 2) inhibits metabolic pathways O 3) disrupts the cytoplasmic membrane 4) inhibits protein synthesis 5) All of the above have equal potential to be toxic