This antibiotic, novobiocin, was tested against two different types of bacteria. What can you say about antibiotic resistance from this result? Microbiology Info.com Staphylococcus saprophyticus Staphylococcus aureus Novobiocin is more resistant to Staphylococcus saprophyticus Novobiocin is more resistant to Staphylococcus aureus Staphylococcus saprophyticus is more resistant to Novobiocin Staphylococcus aureus is more resistant to Novobiocin NOVOBI- OCIN

This antibiotic, novobiocin, was tested against two different types of bacteria. What can you say about antibiotic resistance from this result? Microbiology Info.com Staphylococcus saprophyticus Staphylococcus aureus Novobiocin is more resistant to Staphylococcus saprophyticus Novobiocin is more resistant to Staphylococcus aureus Staphylococcus saprophyticus is more resistant to Novobiocin Staphylococcus aureus is more resistant to Novobiocin NOVOBI- OCIN

Nutrition Now

8th Edition

ISBN:9781337415408

Author:Brown

Publisher:Brown

Chapter24: Dietary Supplements

Section: Chapter Questions

Problem 10RQ

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You have a mixed culture of 2 different bacterial species. One of the species is Gram negative bacilli and the other species is Gram positive cocci. You have noticed that one species is killed by penicillin antibiotics (attacks peptidoglycan) while the other survives. Neither species has antibiotic resistance genes. How can you explain this result? Remember to make direct reference to each bacterial species in your response
Based on the table, what can you conclude from the said data? Title: Indicate whether the microorganism is Resistant, Intermediate or Susceptible with the antibiotic based on the measurement of their zone of inhibition. ANTIBIOTIC MICROORGANISMS Pseudomonas aeruginosa Escherichia coli Staphylococcus aureus Amoxicillin (AMC) Resistant Resistant Resistant Cephalothin (CF) Resistant Susceptible Resistant Chloramphenicol (C) Intermediate Susceptible Resistant Ciprofloxacin (CIP) Susceptible Susceptible Resistant Clindamycin (CC) Resistant Resistant Resistant Erythromycin (E) Resistant Resistant Resistant Oxacillin (OX) Resistant Resistant Resistant Penicillin G (P) Resistant Resistant Resistant Streptomycin (S) Resistant Susceptible Resistant Tetracycline (TE) Resistant Intermediate Resistant Tobramycin (TM) Susceptible…
Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? Day Number of Resistant Bacteria in the Culture 1 5 2 59 3 677 4 32,456 The bacteria were not affected by the antibiotic. After being exposed to the antibiotic, the bacteria altered the antibiotic. A new species of bacteria emerged after the antibiotics were introduced. Random mutations led some bacteria to be resistant and, over time, they increased in the population.
Which two antibiotic combinations show synergistic effect? Chloramphenicol, Amipicillin, Neomycin, Amoxicillin? Clavulanic acid, erthromycin, Bactracin, Tetracyline
Observe the results from a disc-diffusion experiment below. Which antibiotic would you prescribe to a patient with a similar Staphylococci infection? The patient has no known allergies or contraindications for broad-spectrum antibiotics. Remember to use the table above to determine if the bacteria are resistant, susceptible or intermediate. a. Tetracycline b. Streptomycin c. Penicillin d. Norfloxacin
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 cell
Identifying an unknown bacterium is an essential step in the diagnosis and treatment process. Since not every antibiotic is effective against every type of bacteria, knowing what caused a particular infection allows us to make correct prescriptions so patients can recover more quickly. Knowing the cause of an infection also prevents antibiotic resistance as well, since incorrect prescriptions allow bacteria to be unnecessarily be exposed to antibiotics, increasing the chances of developing resistance.
What is the best explanation for why a bacteriostatic treatment might be chosen over a bacteriocidal treatment? Bacteriostatic treatments will eliminate all bacteria while bacteriocidal treatments will only eliminate a portion of the bacteria. Bacteriostatic treatments typically have lower toxicity to the host when compared to bacteriocidal treatments. Bacteriostatic treatments will prevent all bacterial growth, while bacteriocidal treatments will permit some bacterial growth. Bacteriostatic treatments are typically more costly than bacteriocidal treatments.
What are three public health measures that could reduce the probability that bacteria will develop resistance to antibiotics? Be specific in your description, and remember to include evidence to support your answer.
Imagine that you have set up a Kirby Bauer experiment on Mueller Hinton agar (non-selective agar) in order to test if Escherichia coli is susceptible or resistant to Drug X. After 24 hours, you notice a zone of inhibition (clear zone) around your antibiotic disc and determine that E. coli is susceptible to Drug X. You then take a cotton swab and subculture a sample from this zone of inhibition (where no growth was apparent) onto a new agar plate without antibiotics and after 24 hours you see growth of E.coli. What can you conclude about Drug X?
Suppose you do this test on a hypothetical Staphylococcal species with the antibiotics penicillin and tetracycline. You record zone diameters of 20mm for the tetracycline disc and 25mm for the penicillin disc. Which antibiotic would be most effective against this organism? What does this tell you about comparing zone diameters to each other and the importance of the interpretive chart?
a.) Infection with this pathogen can result in a wide range of diseases from ear infections to meningitis. Group of answer choices Haemophilus influenzae Francisella tularensis Enterococcus faecalis Naegleria fowleri b.)As with all microbial control methods, the _______ the cells are exposed, the ______ damage accumulates. Group of answer choices longer, less shorter, more longer, more c.) Which of the following wavelengths would NOT be considered ultraviolet radiation? Group of answer choices 360 nm 200 nm 600 nm 25 nm