EASY
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Choose the microorganism utilised in making curd from milk.

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Important Questions on Useful and Harmful Microbes

MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Name an antibiotic extracted from fungus (mould) and also name that fungus.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Name two organisms that show anaerobic respiration.
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms

Name the following:

Micro-organisms that cause disease.

EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Can micro-organisms be seen with the naked eye? If not, how can they be seen?
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Where do Rhizobium bacteria live? What is their function?
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
What type of respiration takes place in human muscles during physical exercise?
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Name any two antibiotics.
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
During heavy exercise, we get cramps in the legs due to the accumulation of
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Name the four micro-organisms that cause diseases.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Alcohol is formed in _____ respiration.
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Why are antibiotics not effective against ‘common cold’ and ‘flu’?
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Describe how curd is made from milk. Name the bacterium which converts milk into curd.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Define anaerobic respiration. Write a word equation for this process. Name an organism which always uses anaerobic respiration.
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
What are micro-organisms? Give any two examples of micro-organisms.
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Microbes can be seen only under the microscope.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Give the main differences between aerobic and anaerobic respiration.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms

Choose the right word and fill in the blank:

Yeast is a fungus that is also known as _____ plants. (non green/chlorophyllous)

EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
What are microbes? Name different kinds of microbes.
MEDIUM
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
Which of the following is correct for the process of anaerobic respiration?
EASY
Science>Biology>Useful and Harmful Microbes>Useful Micro-organisms
What are antibiotics? What precautions must be taken while taking antibiotics?