Silver may be used to coatingendotracheal tubes. Silver is an excellent antimicrobial againsts a number of infectious agents acting as a non-competitive inhibitor of enzymes. Which of the following apply to HOW the silver functions to kill bacteria? None of the statements apply Denatures enzymes and other proteins leading to cell death Induction of spontaneous mutations in the circular chromosome leading to a loss of antibiotic resistance in the bacteria
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- Actinomycin D inhibits DNA-dependent RNA synthesis. Thisantibiotic is added to a bacterial culture where a specific proteinis being monitored. Compared to a control culture, whereno antibiotic is added, translation of the protein declines over a period of 20 minutes, until no further protein is made.Explain these results.I have a research study entitled Garlic as platform to overcome drug resistance of bacteria. May I ask for help about the statement of the problem.. can you give me at least 3 questiins with regards to my topic.. thank you very muchMost antibacterial drugs disrupt or destroy prokaryotic cellular structures or processes that are different than those of eukaryotic cells or may not even be present in eukaryotic cells. List and describe at least three prokaryotic cellular features that could be targeted to inhibit or kill a bacterial pathogen without harming its eukaryotic host.
- Antibiotics such as tetracycline, streptomycin, and bacitracin aresmall organic molecules that are synthesized by particular speciesof bacteria. Microbiologists have hypothesized that the reason whycertain bacteria make antibiotics is to kill other species that occupythe same environment. Bacteria that produce an antibiotic may beable to kill competing species. This provides more resources forthe antibiotic-producing bacteria. In addition, bacteria that havethe genes necessary for antibiotic biosynthesis contain genes thatconfer resistance to the same antibiotic. For example, tetracyclineis made by the soil bacterium Streptomyces aureofaciens. Besidesthe genes that are needed to make tetracycline, S. aureofaciensalso has genes that confer tetracycline resistance; otherwise, itwould kill itself when it makes tetracycline. In recent years, however,many other species of bacteria that do not synthesize tetracyclinehave acquired the genes that confer tetracycline resistance.For example,…Antibiotics such as tetracycline, streptomycin, and bacitracin aresmall organic molecules that are synthesized by particular speciesof bacteria. Microbiologists have hypothesized that the reason whycertain bacteria make antibiotics is to kill other species that occupythe same environment. Bacteria that produce an antibiotic may beable to kill competing species. This provides more resources forthe antibiotic-producing bacteria. In addition, bacteria that havethe genes necessary for antibiotic biosynthesis contain genes thatconfer resistance to the same antibiotic. For example, tetracyclineis made by the soil bacterium Streptomyces aureofaciens. Besidesthe genes that are needed to make tetracycline, S. aureofaciensalso has genes that confer tetracycline resistance; otherwise, itwould kill itself when it makes tetracycline. In recent years, however,many other species of bacteria that do not synthesize tetracyclinehave acquired the genes that confer tetracycline resistance.For example,…Which of these statements is INCORRECT about restriction enzymes
- When bacteria are grown under adverse conditions, i.e., in the presence of a poison such as an antibiotic, most cells grow and proliferate slowly. But it is not uncommon that the growth rate of a bacterial culture kept in the presence of the poison is restored after a few days to that observed in its absence. suggest why this may be the case.A researcher is planning to plant antibiotic-resistant Escherichia coli pure bacteria sample in antibiotic (ampicillin) solid media in his experiment. Describe each of the sterilization methods that this researcher should use while preparing this solid medium with antibiotics and in cultivation of the bacteria on the solid medium, indicating the stages at which it should be used and giving the mechanism of action.Suppose you spilled two cultures of Salmonella typhimur-ium (each containing 100,000 cells) on your lab bench. You im-mediately applied the same disinfectant to both cultures at thesame time. One culture had been freshly grown for 36 hours andthe other culture is 2 weeks old. If the kill ing rate of the disin-fectant is 90% per minute, do you think that microbes in bothcultures will be completely killed after 6 minutes? Why or whynot?
- Define the following terms:a. proenzymeb. positive cooperativityc. negative cooperativityd. zymogene. free radicalOne of the early results shows that the post-centrifugation pellet of encapsulated cells also contains EA1 and/or Sap. Why is this not proof that Bacillus anthracis cells have both an S-layer and a capsule simultaneously? I need help finding the answer in the article and explain in short answer link to article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC106848/you plated E. coli that had been transformed with your ligation reactions. There will also be a positive control that has E coli transformed with PHSG298 and a negative control that had E. coli transformed with water. Each was plated on both LB plates and LB + kanamycin plates. Match the growth pattern you expect for each transformation and each plate below for growth or no growth a. Negative control transformation plated on LB + kanamycin plates b. Ligation Transformation plated on LB + kanamycin c. Positive control transformation plated on LB + kanamycin plates d. Ligation transformation plated on LB e. Negative control transformation plated on LB plates f. Positive control transformation plated on LB