Drugs
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What is a drug?
Substance taken into the body that affects or modifies the bodies chemical reactions.
What are antibiotics used against?
Bacterial infections
What are antibiotics ineffective against?
Viruses
How do antibiotics KILL bacteria? penicillin, also name cell wall.
Cause cell wall (peptidoglycen) to break down. Without cell wall, water enters through osmosis until the Bacterium bursts.
What is a bacteriostatic antiobiotic?
They stop the bacteria from reproducing.
What do you need to do with bacteriostatic antibiotics to cure infections?
Need to take them for a certain time to ensure all the bacteria are sterile and die.
How are some bacteria antiobiotic resistant?
The fast mutation of bacteria results in antiobiotic resistant bacteria via natural selection.
Increased antibiotic use causes increased what?
Increased number of antiobiotic resistant bacteria.
What is MRSA
Common strain of bacteria that has become resistant to many types of antibiotics.
How can we limit the evolution of resistant bacteria?
By only using the most suitable antibiotic and, only when it is needed to cure infections.
How DOES this limit the development of antibiotic resistant bacteria?
Bacteria cannot develop resistance to an antiobiotic they have not been exposed to.
What are antiobiotics? (Where do they come from?)
Chemicals produced by fungi