Subject: General Science
Book: NCERT Science Class 8
Microorganisms are tiny living organisms that cannot be seen with the naked eye. They include bacteria, viruses, fungi, and protozoa.
- **Useful Microorganisms**:
- Bacteria help in making curd and nitrogen fixation.
- Yeast is used in baking and fermentation.
- **Harmful Microorganisms**:
- Some bacteria and viruses cause diseases like tuberculosis and COVID-19.
- Fungi like bread mold spoil food.
**Possible Exam Questions:**
1. What are microorganisms? Classify them with examples.
2. How are bacteria useful in everyday life?
3. What are the harmful effects of microorganisms?
4. Discuss the role of vaccines in disease prevention.
5. How does yeast help in making bread and alcohol?
What type of energy is stored in a stretched rubber band?
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View QuestionWhich part of the cell is responsible for energy production?
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View QuestionWhich type of radiation has the shortest wavelength?
View QuestionWhich planet is known as the "Red Planet"?
View QuestionWhich part of the cell contains the genetic material?
View QuestionWhich type of bond is present in sodium chloride?
View QuestionWhich element is the most abundant in the Earth’s crust?
View QuestionWhat is the primary source of energy for life on Earth?
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