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Feeling ill
In I/GCSE Biology, medicines help to relieve symptoms (e.g. lozenges for sore throat) but don’t not kill the pathogen
Killing Bacteria (AB = Antibiotics, B= Bacteria, V=Virus)
- Antibiotics = medicines that help cure diseases caused by B
- AB kill B inside body
- Penicillin was first AB discovered
- AB can’t kill viruses
- V’s live and reproduce inside cells = hard to develop a medicine which kills the V but doesn’t damage body cells or tissues
- Effect of a AB measured in a lab
- Done by placing small discs of paper containing antibiotics on a dish containing B growing on gel
- Clear zone is where AB has been killed
- Results in body may be different to results on gel (body is more complicated)
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/682862_80010.png)
A quick jab
In I/GCSE Biology,
- Immunity can be gained w/o ever having the disease
- When baby – immunized against whooping cough, measles and polio
- Immunization (vaccination) = injecting or swallowing a vaccine.
- Dead or inactive form of the pathogen.
- Vaccine doesn’t make you ill but WBC still produce Antibodies and destroy the pathogen.
Step 1 – Weak or dead microbes are injected into body
Step 2 – Antibodies produced which destroy microbes and their toxins
Step 3 – You’re immunized, next time REAL disease comes, antibodies are released before you become ill.
![broken image](http://custom-images.strikinglycdn.com/res/hrscywv4p/image/upload/c_limit,fl_lossy,h_9000,w_1200,f_auto,q_auto/4936730/570013_926640.png)
You got it~