This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 72 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 72 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Specialized structures that perform cell functions are A) Organelles. B) Animal cells. C) Plant cells. D) Prokaryotes. Show Answer Correct Answer: A) Organelles. 2. Ostrich's egg is a A) Tissue. B) Organ. C) Organ system. D) Cell. Show Answer Correct Answer: D) Cell. 3. Which part of the cell is responsible for maintaining its shape and protecting its internal components? A) Cell Membrane. B) Cytoplasm. C) Cell Wall. D) Nucleus. Show Answer Correct Answer: C) Cell Wall. 4. This sac with the cytoplasm stores water, food, waste, products and other materials. A) Vacoule. B) Organelle. C) Cytoplasm. D) Cell membrane. Show Answer Correct Answer: A) Vacoule. 5. What is small rod-like organelle present in the cell which helps to get energy from food? A) Mitochondria. B) Vacuole. C) Chloroplasts. D) Plastids. Show Answer Correct Answer: A) Mitochondria. 6. Is a tough, rigid outer covering that protects the p[-lant call and helps maintain its shape. A) Cell wall. B) Chloroplasts. C) Chlorophyll. D) None of the above. Show Answer Correct Answer: A) Cell wall. 7. This site serves as the synthesis and assembly of ribosomes? A) Nucleolus. B) Nucleus. C) Chromatin. D) Peroxisome. Show Answer Correct Answer: A) Nucleolus. 8. What is the function of a nerve cell? A) Contracts and relaxes for the movement of our body. B) Sends messages from brain to the other parts of the body. C) Helps in Photosynthesis in plants. D) Helps in digestion of food. Show Answer Correct Answer: B) Sends messages from brain to the other parts of the body. 9. An organelle ..... are tiny, grainlike organelles that make proteins, A) Ribosomes. B) Endoplasmic reticulum (ER). C) Mitochondria. D) None of the above. Show Answer Correct Answer: A) Ribosomes. 10. Contains chlorophyll A) Animal cell mitochondria. B) Plant cell chloroplasts. C) Bacterial cell walls. D) Fungal cell vacuoles. Show Answer Correct Answer: B) Plant cell chloroplasts. 11. Given a cell with a defective nucleolus, what impact would this have on protein synthesis? Use reasoning to support your answer. A) Protein synthesis would increase due to more ribosomes. B) Protein synthesis would decrease because fewer ribosomes are produced. C) Protein synthesis would remain unchanged. D) Protein synthesis would stop completely. Show Answer Correct Answer: B) Protein synthesis would decrease because fewer ribosomes are produced. 12. ..... are organelles responsible for digesting certain materials within the cell. A) Vacuoles. B) Chloroplasts. C) Lysosomes. D) Cell membrane. Show Answer Correct Answer: C) Lysosomes. 13. A microscope is used to view cells becausec A) Cells are constantly moving. B) Cells are too large to see all at once. C) Cells are too small to be seen with human eyes. D) Cells are too dark to be seen without light. Show Answer Correct Answer: C) Cells are too small to be seen with human eyes. 14. What are the functions of the ribosomes in a cell? A) DNA replication. B) Energy production. C) Protein synthesis. D) Cell division. Show Answer Correct Answer: C) Protein synthesis. 15. A gel-like substance in all cells that holds all the organelles in place. A) Cytoplasm. B) Endoplasmic Reticulum. C) Golgi Apparatus. D) Ribosomes. Show Answer Correct Answer: A) Cytoplasm. 16. Thread-like structures present in the nucleus called? A) Vacuoles. B) Chromosomes. C) Plastids. D) Genes. Show Answer Correct Answer: B) Chromosomes. 17. Which of the following relationships between cell structures and their respective functions is correct? A) Cell wall:support, protection. B) Chloroplasts:chief sites of cellular respiration. C) Chromosomes:cytoskeleton of the nucleus. D) Ribosomes:secretion. E) Lysosomes:formation of ATP. Show Answer Correct Answer: B) Chloroplasts:chief sites of cellular respiration. 18. Osmosis is a form of ..... A) Passive Transport. B) Active Transport. C) All the above. D) None of the above. Show Answer Correct Answer: A) Passive Transport. 19. Which structure controls the movement of substances into and out of the cell? A) Endoplasmic reticulum. B) Nucleus. C) Mitochondria. D) Cell membrane. Show Answer Correct Answer: D) Cell membrane. 20. Fill in the blank:Chloroplasts have chlorophyll that absorbs the energy of the sunlight for the plant to make its own food through the photosynthesis process. A) Chloroplasts. B) Mitochondria. C) Nucleus. D) Vacuole. Show Answer Correct Answer: A) Chloroplasts. 21. The cell wall in plants contains ..... A) Gulucose. B) Cell membrane. C) Roughage. D) Cellulose. Show Answer Correct Answer: D) Cellulose. 22. Organisms made of more than one cell are called as ..... A) Multicellular. B) Single cell. C) Unicellular. D) None of the above. Show Answer Correct Answer: A) Multicellular. 23. Why is the vacuole larger in a plant cell? A) Plants have more room for it. B) For storage of food and holding shape. C) To deliver water to the cells from roots. D) They use water more efficiently than an animal cell. Show Answer Correct Answer: B) For storage of food and holding shape. 24. What is the main role of enzymes in the cell? A) To store genetic information. B) To speed up chemical reactions. C) To provide structural support. D) To transport substances. Show Answer Correct Answer: B) To speed up chemical reactions. 25. What is the main function of the nucleolus within the nucleus? A) To store genetic material. B) To produce ribosomal RNA. C) To regulate cell division. D) To synthesize lipids. Show Answer Correct Answer: B) To produce ribosomal RNA. ← 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