Apathogenic strain of bacteria has become resistant to an antibiotic that once could kill it. what has happened to these bacteria to make this happen?
-most of the bacteria make changes to their dna to protect themselves, making themselves immune to future attacks.
-only the few bacteria that were immune to the antibiotic survived and reproduced, making all their offspring immune to it as well.
-some of the bacterial cells were able to produce toxins against the antibiotics, making them more likely to survive.
-the bacterial cells learned to remove the receptors on their cell surfaces.