Q1. Which organelle is involved in the synthesis of lipids? (2020)
Solution:
The smooth endoplasmic reticulum is involved in the synthesis of lipids and detoxification processes.
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Q2. Which of the following organelles contains chlorophyll? (2022)
Solution:
Chloroplasts contain chlorophyll, which is essential for photosynthesis in plant cells.
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Q3. What structure regulates the entry and exit of substances in a cell? (2021)
Solution:
The plasma membrane regulates the entry and exit of substances in and out of the cell, maintaining homeostasis.
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Q4. Which structure is responsible for packaging and transporting proteins?
Solution:
The Golgi apparatus is responsible for packaging and transporting proteins to their destinations.
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Q5. Which of the following is NOT a component of the cell theory? (2018)
Solution:
The cell theory states that all living things are composed of cells, cells are the basic unit of life, and all cells arise from pre-existing cells. Spontaneous generation is not part of the cell theory.
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Q6. What is the main function of the nucleus? (2019)
Solution:
The nucleus stores genetic information and controls cellular activities by regulating gene expression.
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Q7. Which structure is involved in the synthesis of lipids? (2022)
Solution:
The smooth endoplasmic reticulum (Smooth ER) is involved in the synthesis of lipids and detoxification processes.
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Q8. What is the function of lysosomes? (2018)
Solution:
Lysosomes contain digestive enzymes that break down macromolecules, old cell parts, and microorganisms.
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Q9. Which structure is responsible for photosynthesis in plant cells? (2021)
Solution:
Chloroplasts are the organelles responsible for photosynthesis, converting light energy into chemical energy.
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Q10. Which of the following is NOT a function of the cell membrane? (2022)
Solution:
The cell membrane does not produce energy; it primarily functions in transport, communication, and acting as a barrier.
