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If an antibiotic kills 99.9 of a bacterial population what would happen to the next generation of bacteria?
Wiki User
∙ 15y ago
If 99.9% are killed then 0.1% survived. If you are talking about 0.1% of say a 1 liter of some solution, this could still be hundreds or thousands of cells. Assuming that 99.9% are killed leads us to believe that the 0.1% are resistant to that particular antibiotic. These bacteria will reproduce and now we have a bunch of bacteria that we won't be able to kill the next time. If 0.1% remain, then next time using the same antibiotic we may only kill half or so because they have gained resistance. Each generation will have more resistance than the last. This ends up as a major problem. This is why many antibiotic resistant bacteria are so prevalent today.
Wiki User
∙ 15y ago
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What bacterial infections does Cephalosporin cure?
Cephalosporins are class of beta lactam antibiotic derived from Acremonium.The main clinical use are:Gram-positive bacteria( mainly first generation cephalosporins)Gram negative bacteria( next generation cephalosporins)
What is bindoclav use for?
Bacterial infections in various parts of the body. It's an antibiotic combined with a drug that makes bacteria less resistant to the antibiotic.
Explain how natural selection can give rive to a population of antibiotic resistant 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.
How could you explain the increase of infection in hospitals by antibiotic-resistance bacterial?
Bacteria become resitant to antibiotics by evolution .
Is antibiotic resistance proof of evolution?
You have a population of bacteria that are all variant, morphologically and, rather redundantly, genetically. The antibiotic is applied and some of these bacteria are resistant ( this is simplistic, but valid ) and survive to reproduce. They have been naturally selected and their alleles, which conferred their resistance, are represented in the next generation of bacteria. This is evolution; the change in allele frequency over time in a population of organisms.
How does a population of bacteria resistant to antibiotics?
the bacteria mutates , so the antibiotic no longer affects the bacteria , therefore making it resistance
Bacterial Generation time and example of fast growing bacteria and slow growing bacteria?
Bacterial generation time is the time is takes for a bacteria to double in quantity. An example of slow growing would be Mycobacterium Tuberculosis (24 hours) and fast growing would be E. Coli (about 20 minutes).
Tetracycline is what kind of bacteria?
Tetracycline is not a type of bacteria, but rather a broad-spectrum polyketide antibiotic produced by the bacteria Actinobacteria Streptomyces, indicated for use against many bacterial infections.
Is bacteria or virus a common cold?
Its a virus, that's why antibiotic will not help at all as they only help against bacterial infections.
What does ciprofloxacin 500ml cure?
Ciprofloxacin is used to treat a number of bacterial infections. The bacterial infections that are treated with Ciprofloxacin are usually in the urinary tract, abdominal infections, respiratory tract, and gastrointestinal tract.
What mechanism that causes population changes in antibiotic resistance bacteria is?
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.
How do human diseases cause by bacteria and diseases caused by viruses react to antibiotics?
Viruses ALL ignore antibiotics, Bacterial infections vary in their response depending on the sensitivity of the bacteria to the specific antibiotic.
