This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Packages proteins A) Endoplasmic reticulum. B) Golgi apparatus. C) Lysosome. D) Ribosome. Show Answer Correct Answer: B) Golgi apparatus. 2. The basic protein subunit of intermediate filament is: A) Actin. B) Vimentin. C) Tubulin. D) Tropomyosin. Show Answer Correct Answer: B) Vimentin. 3. What is an organ system? A) A single organ. B) A group of tissues. C) A group of organs that work together. D) A type of muscle tissue. Show Answer Correct Answer: C) A group of organs that work together. 4. Assertion (A):The nucleus is absent in mature red blood cells of mammals. Reason (R):This allows more space for hemoglobin and efficient oxygen transport. A) Both Assertion and Reason are true, and Reason is the correct explanation of Assertion. B) Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion. C) Assertion is true, but Reason is false. D) Assertion is false, but Reason is true. Show Answer Correct Answer: A) Both Assertion and Reason are true, and Reason is the correct explanation of Assertion. 5. Olivia is helping her younger sister understand how water is formed while making lemonade. She explains that in a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by A) Hydrogen bonds. B) Nonpolar covalent bonds. C) Polar covalent bonds. D) Ionic bonds. E) Van der Waals interactions. Show Answer Correct Answer: C) Polar covalent bonds. 6. Which of the following structures is responsible for maintaining cell shape and providing support in plant cells? A) Cell membrane. B) Cell wall. C) Nucleus. D) Lysosome. Show Answer Correct Answer: B) Cell wall. 7. A student places a plant cell in a solution with a higher concentration of water than inside the cell. What will most likely happen to the cell? A) The cell will shrink. B) The cell will swell. C) The cell will remain the same. D) The cell will burst immediately. Show Answer Correct Answer: B) The cell will swell. 8. There is more Intercellular space found in this tissue A) Collenchyma. B) Sclerenchyma. C) Parenchyma. D) Epidermis. Show Answer Correct Answer: C) Parenchyma. 9. Which organelle is found mostly in plant cells and lies outside the cell membrane? A) Cell Wall. B) Centriole. C) Golgi Body. D) Lysosome. Show Answer Correct Answer: A) Cell Wall. 10. Which of the following is present only in plants: A) Plasma membrane. B) Cell wall. C) Nucleo membrane. D) Ctyoplasm. Show Answer Correct Answer: B) Cell wall. 11. In eukaryotic cells, chromosomes carrying genetic information are found in the A) Ribosomes. B) Lysosomes. C) Nucleus. D) Cell Membrane. Show Answer Correct Answer: C) Nucleus. 12. Thin, double-layered sheet around the cell A) Cell membrane. B) Cell wall. C) Eukaryote. D) Prokaryote. Show Answer Correct Answer: A) Cell membrane. 13. Which historical event most directly contributed to the development of the cell theory? A) The development of microscopes and higher powered lenses. B) The discovery that DNA is the genetic material. C) The development of theories of natural selection on evolution of organisms. D) The discovery and classification of thousands of species of organisms. Show Answer Correct Answer: A) The development of microscopes and higher powered lenses. 14. Which process allows cells to take in large particles by engulfing them? A) Exocytosis. B) Endocytosis. C) Osmosis. D) Diffusion. Show Answer Correct Answer: B) Endocytosis. 15. What is the primary function of the cell wall in plant cells? A) To regulate the movement of substances in and out of the cell. B) To provide structural support and protection. C) To synthesize proteins. D) To conduct photosynthesis. Show Answer Correct Answer: B) To provide structural support and protection. 16. Process in which the substances are brought into the cell . A) Ingestion. B) Endocytosis. C) Exocytosis. D) Osmosis. Show Answer Correct Answer: B) Endocytosis. 17. What is the primary purpose of cell division in multicellular organisms? A) To produce energy. B) To grow and repair tissues. C) To transport nutrients. D) To eliminate waste. Show Answer Correct Answer: B) To grow and repair tissues. 18. Storage of food, water, wastes, and enzymes. (Mostly water) A) Vacuole. B) Mitochondria. C) Cell Membrane. D) Cytoplasm. Show Answer Correct Answer: A) Vacuole. 19. This organelle takes food and turns it into ENERGY for plant and animal cells. A) Chloroplast. B) Mitochondria. C) Lysosome. D) Ribosome. Show Answer Correct Answer: B) Mitochondria. 20. What is the role of epithelial tissues? A) Support and protect organs. B) Facilitate movement. C) Transmit signals. D) Store energy. Show Answer Correct Answer: A) Support and protect organs. 21. The plant cell structure where photosynthesis takes place is called ..... A) Chloroplast. B) Vacuole. C) Chlorophyll. D) Mitochondria. Show Answer Correct Answer: A) Chloroplast. 22. What is the function of chloroplasts? A) Conducts photosynthesis to produce food for the plant. B) Stores water and nutrients. C) Synthesizes proteins. D) Produces energy through cellular respiration. Show Answer Correct Answer: A) Conducts photosynthesis to produce food for the plant. 23. Sites where ribosomes are made. A) Nucleolus. B) Nucleus. C) RER. D) Golgi Apparatus. Show Answer Correct Answer: A) Nucleolus. 24. Holds materials like water and is very large in a plant cell A) Nucleus. B) Golgi body. C) Chloroplast. D) Vacuole. Show Answer Correct Answer: D) Vacuole. 25. Cells that secrete bone matrix A) Osteoblast. B) Canaliculi. C) Osteocyte. D) Lamellae. Show Answer Correct Answer: A) Osteoblast. 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