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biology 0610printed 201 · PDF 201
328 pagesrevision 46933
printed 201 · PDF 201
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201
Notes:
A drug is any substance which when taken into the body, affects chemical reactions in
the body
Antibiotics are the most widely known drug and are used to treat disease owing to
bacteria
They work by disrupting bacterial structure and function
Antibiotics aren’t effective against viruses or fungal disease
They target specific bacterial functions
The example of penicillin is given below:
Antibiotics are becoming less effective due to:
Overuse and being prescribed when not necessary
Patients not completing their antibiotic course
Large scale use of antibiotics in farming for production
Use of antibiotics against viral diseases
The resistant bacteria are commonly referred as MRSA
The mechanism through which antibiotic resistance develops is outlined below: