In class we talked about antibiotic resistent bacteria. When a bacteria is not affected by an antibiotic that means that it is resistant. When bacteria becomes resistant it has a mutation that causes it to survive the antibiotics and multiply.
In the picture you can see the the antibiotic isn't affecting the bacteria and it is reproducing.
We also talked about vaccines. A vaccine we all know about is the flu shot. A vaccine is a dead or weaker version of the pathogen. The reason we have to get vaccines is because we have to get our immune system used to the vaccine. When an invader enters out body out white blood cells create antibodies to tag the pathogen for destruction. After this our body creates memory cells so that way then next time our body encouters this pathogen it will fight it off faster to prevent us from getting sick.
