After releasing enough of one type of antibiotic onto some bacteria, given enough time the bacteria will adapt, and even change to be unaffected by the given antibiotic. The only way to inhibit the bacteria then is find a new, better antibiotic, after which, given enough time and exposure, the bacteria will get used to this antibiotic, so there is again a need for a new one.
Antibiotics are used to kill bacteria.
Also known as "superbugs", antibiotic resistant bacteria have evolved to a point that our usual antibiotics won't kill them. VRE and MRSA are common forms of antibiotic resistant bacteria.
One fungus that produces an antibiotic and will kill some bacteria is Penicillium.
Penecilin
antibiotic
no, its an antibiotic. they only kill bacteria.
Consider the following scenario: An antibiotic is applied to a petri dish of bacteria. The antibiotic will kill of most of the bacteria, but some will remain that are immune to the antibiotic. Therefore, only the immune bacteria will reproduce. Soon, the whole petri dish will be full of bacteria that is immune to the antibiotic. Nature "selects" the immune bacteria for survival.
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.
The trick with curing a bacterial infection is to find something that will kill that particular type of bacteria, but which will not kill human cells. Since the biochemistry of human cells is very similar to that of bacteria, most of the things that kill bacteria will also kill human cells. You do not want to cure a disease at the expense of killing the patient. So, there is no guarantee that such cures can be found. You can do research into various antibiotics, but you may or may not find something that works. Furthermore, even when you do find a good antibiotic, bacteria tend to evolve resistant strains which can no longer be killed by that particular antibiotic. Bacteria are very tough, adaptable organisms. Do not underestimate them.
Antibiotics can only kill bacteria. Not fungi or viruses.
No, you cannot. Antibiotics kill bacteria. It takes longer to kill strong bacteria, while the weak bacteria are killed of early. If you stop you antibiotic early, the weak bacteria will be killed, and the strong will remain. There is no fight for dominance anymore, so the strong bacteria keeps reproducing. You will have to get a strong antibiotic and take it even longer. If you were to keep ending the antibiotics early, eventually they wouldn't have one for you anymore. I suggest you take your antibiotic until the doctor says you can stop.
Some bacteria and other organisms produce antibiotics which mean "against life". These can kill other organisms. The antibiotic penicillin was discovered barbecue an agar plate streaked with a bacteria had a fungus contaminant and an area of clearing was seen around it. This area had an antibiotic made by the fungus and it stopped the growth of the bacteria.