EASY
Earn 100

Blue-green algae is actually a . (Cyanobacteria/ Algae)

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Important Questions on Microorganism Friend and Foe

HARD
State the beneficial effects (or usefulness) of microorganisms in our lives.
HARD

Choose the right word and fill in the blank provided below.

[Glucose/ Vaccines/ Pollutants]

_____ are special substances that help our body to fight against certain disease-causing germs.

EASY
Why are antibiotics not effective against ‘common cold’ and ‘flu’?
MEDIUM
Name an antibiotic extracted from fungus (mould) and also name that fungus.
MEDIUM
How do micro-organisms help in cleaning the environment?
MEDIUM
What are 'broad-spectrum antibiotics'?
EASY
List three ways in which bacteria are useful to us.
EASY
Describe how curd is made from milk. Name the bacterium which converts milk into curd.
MEDIUM
What is a vaccine? How does a vaccine work?
EASY
How do micro-organisms help in increasing soil fertility?
EASY
What is vaccination? Who gave this idea?
EASY
What are vaccines? How do they help us get immunity against a disease?
MEDIUM
Name any four diseases which can be prevented by vaccination.
EASY
What are antibiotics? What precautions must be taken while taking antibiotics?
MEDIUM
Define a vaccine. How does it operate to prevent the occurrence of disease? Enlist vaccine being used against tuberculosis. Expand the term DPT.
EASY
What is meant by fermentation? Name the scientist who discovered fermentation.