Topic Details (Notes format)

Cell: Structure and Functions

Subject: General Science

Book: NCERT Science Class 8

The cell is the basic unit of life.
- **Types**:
- Plant cells (cell wall, chloroplast).
- Animal cells (no cell wall).
- **Cell Components**:
- Nucleus (controls activities).
- Cytoplasm (contains organelles).
- **Functions**:
- Growth, repair, reproduction.

**Possible Exam Questions:**
1. What is the difference between plant and animal cells?
2. How does the nucleus control cell activities?
3. What are the functions of different cell organelles?
4. Why is the cell called the basic unit of life?
5. Explain the process of cell division.

Practice Questions

Which organ regulates blood sugar levels in the human body?

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Which type of blood vessel carries blood away from the heart?

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What is the function of hemoglobin in the blood?

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Which gas is released during photosynthesis?

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What is the chemical formula for carbon dioxide?

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Which organ is responsible for filtering blood in the human body?

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What type of bond is formed by sharing electrons between atoms?

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What is the most abundant element in the universe?

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Which planet has the strongest gravitational force?

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What is the smallest unit of life?

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