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Certain bacteria produce a chemical that makes them resistant to penicillin since these bacteria reproduce asexually they usually produce offspring that?
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∙ 14y ago
survive exposure to penicillin
Wiki User
∙ 14y ago
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What is MRS bacteria?
It is usually called MRSA: Methicillin-Resistant Staphylococcus Aureus. Methycillin is a version of penicillin that was developed to attack penicillin-resistant bacteria. MRSA can sometimes be treated with other common antibiotics like tetracyclines, e.g. doxycycline.
Is positive gram cocci resistant to penicillins?
No penicillin is most effective against gram-positive bacteria.
Are archaea bacteria resistant to penicillin?
Without fully explaining how the penicillin antibitic works: yes, archaea are resistant to penicillin. This is because they don't have peptidoglycan in their cell wall. Penicillin works by lowering the newly formed peptidoglycan in multiplying bacteria. It also does other things. The reason it works (this is natural penicillin G) only on Gr+ is because the can't get through the GR- cell wall. (I say this because both + and - HAVE peptidoglycan in their cell wall)
Gram negative bacteria are much more resistant to penicillin because?
Peptidoglycan in Gram-negative bacteria is inaccessible to penicillins because penicillin cannot penetrate the Gram-negative outer membrane.
Is bacillus cereus susceptable or resistant to erythromycin?
it's susceptable. i found that erythromycin had a very strong effect on bacillus cereus, especially when compared to the effect that streptomycin, tetracycline, and penicillin had.
When the antibiotic penicillin was first introduced it was immediately effective in combating staphylococcus bacterial infections?
1. members of the original population of bacteria that were penicillin resistant survived and reproduced, creating a more resistant populationReasonsome members of the of the original staphylococcus population had a mutation that made them penicillin- resistant. they survived and reproduced and all their offspring were also resistant to penicillin, creating a more resistant population
How did pesticide-resistant insects came about as a result of evolution?
Natural selection, the method by which evolution works, is driven by the fact that organisms that die before reproducing do not pass on their genes to their offspring and because of this only those that can survive long enough to reproduce will do so and thus populations tend to be filled with those who survive the best in their current environment. The few bugs that don't die from pesticide reproduce and have (mostly) pesticide-resistant offspring that, in turn, have even more pesticide-resistant offspring.
Which semi-synthetic penicillin's creation was sparked by the discovery of Staphylococcus aureus bacteria resistant to penicillin?
Methicillin
Can you get strep throat if on penicillin?
Yes,but MOST people do NOT. If it is a resistant strain of strep,or your body has immunity to penicillin...
Can Staphylococcus grow in penicillin G?
It depends. Some bacteria, like Staphylococcus aureus, have become resistant to penicillin G. Not all species of Staphylococcus are resistant. Even some strains of Staphylococcus aureus are still susceptible to penicillin G.
Why does not finishing an antibiotic contribute to antibiotic resistance?
When you take antibiotics, you start killing the bacteria in your body. The first ones to die are the ones that are mostly easily killed by the drug. Bacteria are very variable, however, so some of the bacteria in your body will be more able to resist the drug. For example, they might have an enzyme that gives them some protection from the drug. If you take all of your prescription, you might eventually overwhelm even these slightly resistant bacteria, killing them. If you stop taking your antibiotics early, however, the more resistant bacteria may survive. When they reproduce, they pass their resistance along to their offspring. As bacteria reproduce, more changes occur in their DNA so slightly resistant bacteria can become even more resistant. So, not finishing your antibiotic increases the chances of letting resistant bacteria survive to reproduce and make resistant offspring, that may become even more resistant with time.
If bacteria is resistant to penicillin can you give erythromycin?
Yes, erythromycin is very similar to penicillin, in the types of bacterial infections it can fight. Erythromycin is used in patients who are allergic to penicillin, primarily. But an M.D. could prescribe it to somebody who has developed a tolerance, or to an infection that is penicillin- resistant. Typically, though, a different antibiotic is chosen, given the similarities of the two drugs.
What type of chemical will allow come bacteria to be resistant to many penicillin's?
penicillinase
The rapid development of bacteria resistant to penicillin is an example of gradualism?
Punctuated equilibrium
Is the rapid development of bacteria resistant to penicillin an example of gradualism?
Punctuated equilibrium
Can penicillin treat tb bacteria?
No. TB is commonly resistant to numerous antibiotics. It's generally treated with a cocktail of antibiotics, none are Penicillin.
Why the frequency of penicillin-resistant bacteria can change over time within the population?
its smaLL
