Page 53 - SCIENCE DLP T6 SK (SEMAKAN 2017)
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Production of medicine
Some fungi are Some fungi, bacteria,
used to produce and viruses are used
penicillin, an to produce vaccines
antibiotic which that stimulate VA CCIN E
prevents the the production of
growth of antibodies to fight
harmful bacteria. against harmful
viruses.
Production of organic fertilisers Treatment of sewage
Animal faeces Bacteria help the
mixed with decomposition
sawdust is process of faeces
decomposed by breaking
ORGANIC
by bacteria to FERTILISER down organic
produce organic waste found
fertiliser. in sewage
treatment plants.
Harmful Effects of Microorganisms
The actions of microorganisms also How are the actions of
have harmful effects. microorganisms harmful
to us?
Cause food spoilage Cause tooth decay
Fungi that grow on food cause food Bacteria in the mouth produce acid
to turn bad. from sugar and food particles.
The acid causes tooth decay.
3.1.5 45
