Bacteria also do evolve.
If one bacteria is mutated, and survives an attack by antibiotic, he multiplies and forms more bacteria which are more resistant against antibiotic.
As days of surviving antibiotics and multiplying eventually creates a bacteria which is resistant against it.
That depends on the bacteria that is present. Different antibiotics work on different bacteria and there is not one specific atibiotic that works on all bacteria. A doctor needs to detrmine what antibiotic will work and the dose needed for each individual.
Yes, of course! But not all the time.
If antibiotic resistance is added to the gene being cloned, antibiotics can be used to isolate the transformed bacteria (ones with the gene being cloned) by killing off all non-transformed bacteria, that don't have the antibiotic resistance. There is a chance that the non-transformed bacteria can mutate to develop antibiotic resistance.
Missense mutation Nonsense mutation Frameshift insertion Frameshift deletion All may cause antibiotic resistance in bacteria
This term is misleading. The antibiotic "selects" bacteria that are not affected by it. If a person will grow bacteria on a petri dish and add an antibiotic to it, some bacteria may live and grow. This is actually a form of natural selection. The ones that will grow are resistance to the antibiotic. They have some way of not being affected. If a person takes a colony from the plate that has this resistance and grows it on another plate and add the antibiotic, all on the plate will be resistant.
Antibiotics that are not bactericidal are called bacteriostatic antibiotics. These drugs work by inhibiting the growth and reproduction of bacteria rather than directly killing them. Examples include tetracyclines, macrolides, and sulfonamides.
Penicillin, an antibiotic, kills bacteria. It was the first antibiotic used, and has been around for a long time. As it has been used, the bacteria that it kills have become resistantto it. Part of this has been caused by not totally eradicating the bacteria in the body. The bacteria that survive demonstrate resistance, and continue to multiply -- only, the strain of bacteria that is left is now resistant to penicillin.All antibiotics are susceptible to this effect. That is why, when you are prescribed an antibiotic by a doctor, you will be instructed to take all the antibiotic medication, even if you feel you are well and think you no longer need it. The goal is to kill all the bacteria and prevent the creation of a resistant strain of it.
If you stop taking your antibiotic before you complete the course any surviving bacteria developes an immunity to that antibiotic. You must then take a different, usually stronger antibiotic to kill the infection. Once that happens that particular antibiotic usually will not work for any bacterial infection you may get.
When you have an infection, you should plan on feeling pretty bad for three to four days. After that, the antibiotic should have killed enough of the bacteria so that you will start feeling back to normal - you should keep taking the antibiotic so that all of the bacteria are killed and not just part of them. If you do not feel markedly better by Day 4, you should call your doctor and see if you need another antibiotic.
Viruses ALL ignore antibiotics, Bacterial infections vary in their response depending on the sensitivity of the bacteria to the specific antibiotic.
No, ringworm is a fungus not a bacteria. It needs to be treated with a fungicidal. In fact, there is a small chance using triple antibiotic cream may make it worse since antibiotic creams are usually made to kill bacteria only. If you kill all the bacteria in the area, it may kill the fungus's (ringworm) competition and allow it to flourish.
No. There are different types of bacteria that respond to antibiotics differently. Thankfully, the type of bacteria that are most often responsible for respiratory infections are quite different than the type of bacteria that usually cause urinary tract infections. That's just one example. As a result, the antibiotic that is prescribed for strep throat is different than the antibiotic prescribed for urinary tract infections.