Hi Vaishnavi,
Chapter 8 of Class 8 Biology, titled "Cell Structure and Functions," delves into the fundamental unit of life—the cell. Here are some important questions and their answers to help you grasp the key concepts:
1. What is the basic structural and functional unit of life?
Answer: The cell is the basic structural and functional unit of life.
2. What is the function of the cell wall in plant cells?
Answer: The cell wall provides rigidity, tensile strength, structural support, and protection against mechanical stress and infection
3. What is the function of the nucleus in a cell?
Answer: The nucleus controls the activities of the cell and contains the cell's genetic material.
4. What is the function of mitochondria in a cell?
Answer: Mitochondria are the powerhouses of the cell, generating energy through cellular respiration.
5. What is the function of chloroplasts in plant cells?
Answer: Chloroplasts contain chlorophyll and are responsible for photosynthesis, converting light energy into chemical energy
6. What is the function of the cell membrane?
Answer: The cell membrane controls the entry and exit of materials, maintaining the cell's internal environment.
7. What is the function of the endoplasmic reticulum?
Answer: The endoplasmic reticulum synthesizes proteins and lipids, and transports materials within the cell.
8. What is the function of the Golgi apparatus?
Answer: The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or internal use.
9. What is the function of lysosomes?
Answer: Lysosomes contain digestive enzymes that break down waste materials and cellular debris.
10. What is the function of vacuoles in plant cells?
Answer: Vacuoles store nutrients and waste products, and help maintain turgor pressure in plant cells.
For a more comprehensive understanding, you can refer to the detailed explanations and additional questions available on Lern CBSE.
