© Oxford University Press 2017 1
Oxford Science 9 Victorian Curriculum Teacher obook assess ISBN 9780190307004
Permission has been granted for this page to be photocopied within the purchasing institution only.
Student book questions
3.9 Pathogens cause disease
Pages 6263
Extend your understanding 3.9
1 What is the difference between a virus and bacteria?
2 What is the germ theory?
3 What are Koch’s postulates?
4 Identify how Warren and Marshall used each of Koch’s postulates to find the cause of stomach ulcers.
© Oxford University Press 2017 2
Oxford Science 9 Victorian Curriculum Teacher obook assess ISBN 9780190307004
Permission has been granted for this page to be photocopied within the purchasing institution only.
5 Name an infection that you or someone you know had, that needed antibiotics to cure.
6 How is Louis Pasteur’s discovery still in use today?