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Starter questions:
1. Name three types of ANTIMICROBIAL
2. Identify the microbe targeted by each type of antimicrobial
3. Name four different classes of antibiotics
4. Give examples of antibiotics from each of the four classes named in Q3
How do antibiotics work?
There are two types of antibiotic:
•
........................................................– which inhibit growth of bacterial cells.
•
........................................................ - which directly destroy bacterial cells.
Extension: antibiotics do not work against viruses because viruses do not have a specific polymer in their coating (bacteria has
this polymer). Can you find out what that polymer is called?
Antibiotic resistance
•
Some strains of bacteria are resistant to antibiotics (e.g MRSA) i.e. use of antibiotics against that strain will
be ineffective.
Antibiotic resistance and TB
•
Mycobacterium tuberculosis is a causative agent of TB.
•
........................................................ treatment of TB is challenging as a course of treatment can last 6-9
months.
•
Initially, weak strains of the M.tuberculosis are ........................................................
•
Some patients then feel better and ........................................................ their antibiotics.
•
This means that ........................................................ and more ........................................................ strains of
M.tuberculosis are able to reproduce with less ........................................................
•
These strains are then ........................................................ to be spread to others.
•
They are also likely to take part in ........................................................ and become
........................................................to multiple antibiotics.
•
To overcome this problem, sufferers of TB are given ........................................................ of 4 different
........................................................
Extension: what happens / happened with MRSA? Explain