In a large population of bacteria, there may be some cells that are not affected by the antibiotic. These cells survive and reproduce, producing even more bacteria that are not affected by the antibiotic.
From the over prescribing of antibiotics. Bacteria change to overcome the affects of antibiotics. They keep morphing or changing and we keep trying to find more ways to kill them. They become resistant or immune to the new medicines we come up with to kill them. In the process they become stronger. blah blah
As simple as this sounds, survival of the fittest is the answer. The bacterial cells that are not resistant are killed or at least inhibited in growth and reproduction; however, the resistant ones grow now without much competition so they take over the majority of the population.
by resistance
the antibiotics pass on their genes
it inherited the allele that made it resistant
Yes.
endospore
why are resistant spores useful to bacteris
diptheria There are an extremely large amount of diseases caused by bacteria, but fortunately bacterial diseases are easily cured with antibiotics, whereas viral diseases cannot be cured (only the symptoms can be treated) and must run there coarse.
Yes, over use of antibiotics can cause bacteria to become resistant.
Yes. This is why bacteria are becoming resistant to antibiotics.
When bacteria become resistant by adapting to their environment they become harder to treat.
When bacteria become resistant by adapting to their environment they become harder to treat.
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.
it inherited the allele that made it resistant
Yes.
All bacteria can mutate and evolve, Methicillin Resistant Staphylococcus Aureus (MRSA) is the best example of a bacteria changing to adjust to its environment.
no, many bacteria have become resistant due to improper use of antibiotics.
A random mutation causes one bacterium to become resistant to an antibiotic. Then all the others are killed when the antibiotic is introduced to the environment. The mutated bacterium is free to reproduce and soon many members of that species are resistant to that antibiotic.
Hospitals are rich with antibiotics. These will kill most bacteria, but those that survive often become resistant. At a hospital bacteria can become resistant to a variety of antibiotics and can pass from one patient to another, many of whom already have weakened immune systems. It is a good example (for the bacteria anyway) of "what doesn't kill you only makes you stronger."
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.