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Questions and Answers
What is the process of conversion of sugar into alcohol called?
What is the process of conversion of sugar into alcohol called?
Which organism is the carrier of malaria-causing protozoan?
Which organism is the carrier of malaria-causing protozoan?
What causes bread or idli dough to rise?
What causes bread or idli dough to rise?
Which of the following is an antibiotic?
Which of the following is an antibiotic?
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What is the most common carrier of communicable diseases?
What is the most common carrier of communicable diseases?
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How can microorganisms be seen?
How can microorganisms be seen?
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What are the major groups of microorganisms classified based on?
What are the major groups of microorganisms classified based on?
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Which of the following is NOT a major group of microorganisms?
Which of the following is NOT a major group of microorganisms?
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What is the role of microorganisms in fixing atmospheric nitrogen in the soil?
What is the role of microorganisms in fixing atmospheric nitrogen in the soil?
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Which of the following is NOT a commonly known antibiotic?
Which of the following is NOT a commonly known antibiotic?
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What is the main function of antibiotics?
What is the main function of antibiotics?
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Why are antibiotics typically made from fungi and bacteria?
Why are antibiotics typically made from fungi and bacteria?
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Study Notes
Microorganisms and Their Roles
- The process of conversion of sugar into alcohol is called fermentation.
- The carrier of malaria-causing protozoan is the female Anopheles mosquito.
- Yeast fermentation causes bread or idli dough to rise.
- Penicillin is an antibiotic.
- Human beings are the most common carriers of communicable diseases.
- Microorganisms can be seen with the aid of a microscope.
- Microorganisms are classified into major groups based on their cell structure, namely: Bacteria, Virus, Fungi, and Protists.
- Viruses are not considered a major group of microorganisms in the context of cell structure classification.
- Microorganisms play a crucial role in fixing atmospheric nitrogen in the soil.
- Streptomycin is not a commonly known antibiotic.
- The main function of antibiotics is to inhibit the growth of microorganisms or kill them.
- Antibiotics are typically made from fungi and bacteria because they produce certain chemicals that can inhibit or kill other microorganisms.
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Description
Practice NCERT Solutions for Class 8 Science Chapter 2 on Microorganisms: Friend and Foe. Answer fill in the blanks and multiple-choice questions based on the chapter content.
