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Penicillin comes from an antibiotic made by one microbe that acts only against certain others. Some microbes are just resistant toward the antibiotic and another will have to be used. At times not enough or a dose that is too weak will prevent the antibiotic from working. Some antibiotics will work only on Gram negative or Gram positive bacteria. Some are broad spectrum and will work on both.
It just is that penicillin resistant bacteria are not affected by penicillin. These have mutated and evolved to resist penicillin. These are often called "super bugs".
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoAntibiotics are only effective on bacteria, hence the name. Most bacterias growth is not even hindered in the presence of antibiotics. It is a very bad idea to go to the doctor when you have the flu, because they will prescribe antibiotics that will do nothing to make you feel better, but increase bacterial resistance to antibiotics
Wiki User
∙ 15y agobecause viruses use only the host cells machinery
Wiki User
∙ 13y agoBecause penicillin is an antibiotic - not an anitvirual..
Antibiotics only kill bacteria not viruses.
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Is penicillin a bacteria?
Yes, penicillin prevents the formation of new bacterial cell wall. If a bacteria reproduces, new cell wall cannot be produced and the cell lyses and dies. However penicillin has no effect on a quiescent (non-reproducing) bacteria. Therefore penicillin is also called a bacteriostatic agent (prevents growth of bacteria), which means penicillin does stop bacteria from reproducing.
Does penicillin kill fungus-caused diseases?
No. Penicillin only kills bacteria.
Certain bacteria produce a chemical that makes them resistant to penicillin since these bacteria reproduce asexually they usually produce offspring that?
survive exposure to penicillin
If gram positive bacteria are incubated with penicillin in an isotonic solution will it able to grow or lysed explain why?
the bacteria can still grow in an isotonic solution with penicillin present.
What molds produce substances that kill bacteria?
The answer is penicillin
Are non-dividing bacteria sensitive to penicillin?
No, it is not. Only dividing bacteria are sensitive to penicillin, as it usually work by either damaging the harmful dividing bacteria's cell membrane or preventing its growth.
Is penicillin a bacteria?
Yes, penicillin prevents the formation of new bacterial cell wall. If a bacteria reproduces, new cell wall cannot be produced and the cell lyses and dies. However penicillin has no effect on a quiescent (non-reproducing) bacteria. Therefore penicillin is also called a bacteriostatic agent (prevents growth of bacteria), which means penicillin does stop bacteria from reproducing.
Does penicillin have bacteria?
it is grown from bacteria
What is the strongest form of penicillin?
Like most antibiotics, penicillin is very powerful against certain bacteria, and not powerful at all with other bacteria. Example: if I was careless enough to catch gonorrhoea, I would take penicillin in a heartbeat. If I had a urinary infection or lung infection, I would take Levaquin or Augmentin, but not penicillin.
Is penicillin a Bacteria or not?
penicillin it is a anticiotic producted by molds of peniciullium genera.
How often can you take penicillin G injections without becoming immune?
It's not up to you, it's up to the bacteria which are infecting you. If you already have bacteria with high resistance to penicillin, it won't work the first time. If your bacterial infection has no genes for resistance, penicillin could work forever. So the answer varies between 0 and infinity. This is not a question for wiki, but for your physician.
Why is penicillin not effective anymore?
Penicillin does still work, just not as well. This is because the few germs that can survive the antibiotic will then pass on that capabaility to their progeny; the basics of genetics in action. This means that later generations of the same bacteria need more to kill them or, even worse, are entirely immune to the effect of penicillin. Some strains of bacteria have evolved to the point that they are not only unaffected by penicillin itself, but all drugs similar to penicillin (beta-lactams). One such strain is MRSA (methicillin-resistant Staphylococcus aureus).
Does penicillin cure athletes feet?
Penicillin has no effect on the fungus that causes athletes foot. Penicillin itself is derived from a fungus. Penicillin is anti-bacterial, it affects bacteria. Penicillin may be used if the athletes foot is serious enough to cause a bacterial infection. Anti-bacterials can cause athletes foot and other fungal infections to worsen by killing the "good" bacteria we all have on our skin and in our bodies. Some of those bacteria feed on fungi.
Does penicillin kill fungus-caused diseases?
No. Penicillin only kills bacteria.
Is penicillin isolated with bacteria?
no...not from bacteria...but from fungi called penicillium notatum
Do natural antibacterials work?
All antibacterials work by definition, otherwise they would not be called antibacterials. (antibacterial: what kills bacteria or hinder their reproduction)Natural antibacterials include penicillin, saliva, salt, or even heat.
Why would your body build up an immune to penicillin?
The body does not build up immunity to penicillin. The bacteria that penicillin is designed to kill does. When you have a bacterial infection a doctor may prescribe penicillin to kill the bacteria off. As you take the penicillin more and more bacteria are killed within your system and you start to feel better. As you start to feel better you become less aware of the symptoms of the infection and are inclined to forget to keep taking the remainder if your penicillin (after all I feel fine you say) the problem however is that some of the bacteria are not killed of if the coarse of medicine is not finished. These bacteria are likely to form a resistance to penicillin as a result of their exposure making the illness harder to treat next time. Some illnesses that were once easily treated with penicillin are now very difficult or impossible to treat. Many as the direct result of over use or improper use of penicillin.
