© Oxford University Press 2017
Oxford Science 9 Victorian Curriculum Teacher obook assess ISBN 9780190307004
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7 Timeline challenge
Fill in the gaps to create a timeline that outlines the details of the discovery, who made the discovery
and the year that it occurred.
Hippocrates. He concluded that something in the ___________, soil, water and food
causes _______________ in humans and animals.
Claudius Galen. He used animal _______________ to explore anatomy.
Girolamo Francastor. One of the first to suggest that disease could be ___________
from person to person via small invisible ___________. He theorised that these particles
could travel through the air, via contaminated clothing or by direct ___________ with the
Koch and Pasteur. Postulated and confirmed germ theory.
Germ theory states that many diseases are caused by the presence and actions of
specific_________________. These microorganisms are called_______________.
1 The microorganism or other pathogen must be present in all cases of the disease.
2 The pathogen can be _____________ from the diseased host and grown in the
3 The pathogen from a pure ______________ must cause the disease when
inoculated into a healthy susceptible laboratory animal.
4 The pathogen must be re-isolated from the new host and shown to be the same as
the originally _________________ pathogen.
Alexander Flemming. He performed some experiments and discovered that the
Penicillium mold was releasing a chemical that killed ____________.
Howard Florey. Instrumental in developing ______________ into a form that could be
Barry Marshall and Robin Warren. Together they discovered that a ____________
(Helicobacter pylori) was found in all patients with stomach _________________, an
acidic environment, previously thought to be impossible. They also tested this on
Marshall and gave him ______________ to cure it.