3.33 Antibiotic resistance

understand how resistance to antibiotics can increase in bacterial populations.
-bacterial population is Staphlococcus aureus- known to cause skin infection and lung infection.
-if infected can be treated with drug called methicillin (type of antibiotic)
-type of chemical will kill the SA (Staphlococcus aureus)
-the type of SA which is killed by the methicillin is called the susceptible form (can be abbreviated to MSSA) (MSSA- methicillin susceptible Staphlococcus aureus)

-there was a random mutation to SA. when the methicillin (antibiotic) was applied the bacteria did not die (resistant form)
-the type of SA which is resistant to the methicillin is abbrivated to MRSA (MRSA- methicillin resistant Staphlococcus aureus)
-the mutation has create genes in SA, when expressed, allows it to break down the antibiotic and resists which causes bacteria to not die.
-if antibiotic is used across time the form of bacteria increasing survives, becomes more common and this becomes a serious problem in hospitals because antibiotic no longer work.