Antibiotics are drugs that are antimicrobials and are used to treat bacterial infections. They kill the bacteria or prevent them from reproducing and spreading. Antibiotics are a vital part of modern medicine as they have prevented millions of infections. They are considered ‘miracle drugs’ because they are able to cure infections that were previously fatal and have allowed surgeries to become safer as well as helping an increase in life expectancy. Scientists have discovered dozens of antibiotics that are used for different types of infections.Antimicrobial resistance or AMR occurs due to a genetic mutation in a bacterium’s genetics. One bacterium carries a genetic that is resistant to the antibiotic. The resistant bacterium is more likely to survive, due to natural selection, so the genetic will develop and spread to more bacterium. Eventually, the bacteria may become fully resistant to the antibiotic. This means the bacteria is able to survive in the presence of the antibiotic which it couldn’t before. The drug is now unable to be used to prevent an infection by that bacteria. Resistance is accelerated by selective pressures due to widespread and frequent antibiotic use.