This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 31 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. You cannot see a single bacterium with your eyes alone. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. What is the structure of the endoplasmic reticulum? A) Solid mass of cells. B) Network of membranes and tubules. C) Hollow cavity with no structure. D) Single large membrane. Show Answer Correct Answer: B) Network of membranes and tubules. 3. Plants with green leaves have special organelles called chloroplasts A) Cell wall. B) Chloroplasts. C) Chlorophyll. D) None of the above. Show Answer Correct Answer: B) Chloroplasts. 4. Motor proteins provide for molecular motion in cells by interacting with what types of cellular structures? A) Sites of energy production in cellular respiration. B) Membrane proteins. C) Ribosomes. D) Cytoskeleton. E) Cellulose fibers in the cell wall. Show Answer Correct Answer: D) Cytoskeleton. 5. Why is it important to wash our hands according to the passage? A) To prevent diseases caused by harmful microorganisms. B) To remove visible dirt. C) To keep hands moisturized. D) To avoid allergies. Show Answer Correct Answer: A) To prevent diseases caused by harmful microorganisms. 6. Name one example of Tissue A) Nerve Tissue. B) Lung. C) Stomach. D) None Of Above. Show Answer Correct Answer: A) Nerve Tissue. 7. Where is DNA found inside a eukaryotic cell? A) Golgi apparatus. B) Endoplasmic reticulum. C) Cytoplasm. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 8. Which of the following differences between plant cells and animal cells is incorrect? A) Cell wall is present in plant cells but absent in animal cells. B) Plastids are present in plant cells but absent in animal cells. C) Vacuoles are smaller in plant cells but larger in animal cells. D) All the differences are correct. Show Answer Correct Answer: C) Vacuoles are smaller in plant cells but larger in animal cells. 9. What is the cytoplasm composed of? A) Cytosol and organelles. B) Nucleus and ribosomes. C) Cell membrane and nucleus. D) Mitochondria and ER. Show Answer Correct Answer: A) Cytosol and organelles. 10. Unlike a eukaryotic cell, a prokaryotic cell does not have A) DNA. B) A cell membrane. C) Cytoplasm. D) A nucleus. Show Answer Correct Answer: D) A nucleus. 11. Directions-(Q.23-Q.30) Identify the organelle.2- "I am the jelly-like fluid present in the cell. All the chemical reactions occur here, and all the organelles are suspended in me" A) Cytoplasm. B) Nucleoplasm. C) Cell Membrane. D) Nucleolus. Show Answer Correct Answer: A) Cytoplasm. 12. What is the main function of lysosomes in the cell? A) To produce proteins. B) To transport substances. C) To break down and recycle cell parts. D) To package proteins. Show Answer Correct Answer: C) To break down and recycle cell parts. 13. The process by which a protein channel allows molecules to cross the cell membrane is called A) Active transport. B) Diffusion. C) Osmosis. D) Nucleus. Show Answer Correct Answer: A) Active transport. 14. The jelly like substance present between the Nucleus and the Cell Membrane A) Cytoplasm. B) Nucleolus. C) Protoplasm. D) Chlorophyll. Show Answer Correct Answer: A) Cytoplasm. 15. Which type of connective tissue acts as an energy reserve and provides cushioning to organs? A) Adipose tissue. B) Bone tissue. C) Blood. D) Tendons. Show Answer Correct Answer: A) Adipose tissue. 16. Cartilage-producing cells occupy small cavities in cartilage called ..... , while bone-producing cells occupy cavities in bone called ..... A) Lacunae; Haversian canals. B) Canaliculi; Haversian canals. C) Lamellae; lacunae. D) Lacunae; lacunae. Show Answer Correct Answer: D) Lacunae; lacunae. 17. Where is smooth muscle tissue commonly found in the body? A) Heart. B) Lungs. C) Walls of hollow organs. D) Skeletal muscles. Show Answer Correct Answer: C) Walls of hollow organs. 18. Which organelles can use energy from sunlight to create energy-rich food molecules? A) Lysosomes. B) Golgi apparati. C) Vacuoles. D) Choropasts. Show Answer Correct Answer: D) Choropasts. 19. What type of cells are prokaryotic cells? A) Cells with a nucleus. B) Cells without a nucleus. C) Cells that are multicellular. D) Cells that contain organelles. Show Answer Correct Answer: B) Cells without a nucleus. 20. Predict what would happen to a cell if its mitochondria were removed. A) The cell would continue to function normally. B) The cell would lose its ability to produce energy. C) The cell would become more efficient at protein synthesis. D) The cell would divide more rapidly. Show Answer Correct Answer: B) The cell would lose its ability to produce energy. 21. The living substance of the cell A) Cytoplasm. B) Nucleus. C) Protoplasm. D) Nucleolus. Show Answer Correct Answer: C) Protoplasm. 22. Which organelle is responsible for breaking down waste and cellular debris? A) Ribosome. B) Lysosome. C) Nucleus. D) Chloroplast. Show Answer Correct Answer: B) Lysosome. 23. Which organelle is responsible for lipid synthesis and detoxification? A) Rough endoplasmic reticulum. B) Smooth endoplasmic reticulum. C) Golgi apparatus. D) Lysosome. Show Answer Correct Answer: B) Smooth endoplasmic reticulum. 24. Thread like structures present at the cell membrane of Paramecium outside the cell A) Cilia. B) Ribosomes. C) Rough Endoplasmic Reticulum. D) Chromosomes. Show Answer Correct Answer: A) Cilia. 25. Life functions are performed at many levels of biological organization. Which level of biological organization is the simplest level at which a structure can support life functions? A) Cell. B) Tissue. C) Organelle. D) Organ system. Show Answer Correct Answer: A) Cell. ← PreviousNext →Related QuizzesClass 8 Science Chapter 8 Cell Structure And Functions Quiz 1Class 8 Science Chapter 8 Cell Structure And Functions Quiz 2Class 8 Science Chapter 8 Cell Structure And Functions Quiz 3Class 8 Science Chapter 8 Cell Structure And Functions Quiz 4Class 8 Science Chapter 8 Cell Structure And Functions Quiz 5Class 8 Science Chapter 8 Cell Structure And Functions Quiz 6Class 8 Science Chapter 8 Cell Structure And Functions Quiz 7Class 8 Science Chapter 8 Cell Structure And Functions Quiz 8Class 8 Science Chapter 8 Cell Structure And Functions Quiz 9Class 8 Science Chapter 8 Cell Structure And Functions Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books