Q1
What is an example of a beneficial microbe use?
AYeast for bread-making
BOnly causing disease
CNo beneficial uses exist
DOnly food spoilage
SSCClass 9 (SSC)Science and Technology (विज्ञान आणि तंत्रज्ञान)Ch 8 · Topic 2
Practice and Revision - Useful and Harmful Microbes
Let us practise and revise what we learned about useful and harmful microbes. Microbes can be beneficial, aiding processes like fermentation
Core concept
Beneficial microbes are used in food production, like yeast for bread and bacteria for yoghurt and cheese fermentation processes.
How it works
Microbes also help produce antibiotics, like penicillin from fungi, and are used in biotechnology for various medical applications.
Why it matters
Harmful microbes cause diseases in humans, animals, and plants, spreading through various means and requiring prevention measures.
Key detail
Understanding both beneficial and harmful microbes helps us harness their advantages while protecting against their negative effects.
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Quick notes
• Beneficial microbes: food production.
• Yeast for bread, bacteria for yoghurt/cheese.
• Microbes produce antibiotics like penicillin.
• Used in biotechnology, medical applications.
• Harmful microbes: cause diseases.
• In humans, animals, plants.
• They spread through various means.
• Understanding both helps harness benefits, prevent harm.