This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 46 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The process in which water diffuses through a selectively permeable membrane is called A) Active transport. B) Osmosis. C) Nucleus. D) Diffution. Show Answer Correct Answer: B) Osmosis. 2. Which of the following cells do NOT have cell walls? A) Plant cells. B) Animal cells. C) Fungi cells. D) Bacteria cells. Show Answer Correct Answer: B) Animal cells. 3. Medium for chemical reaction A) Nucleus. B) Chloroplasts. C) Cytoplasm. D) Vacuole. Show Answer Correct Answer: C) Cytoplasm. 4. This is a gel-like substance found inside the cell membrane. A) Chloroplasts. B) Cytoplasm. C) Ribosomes. D) Golgi apparatus. Show Answer Correct Answer: B) Cytoplasm. 5. All cells come from other ..... A) Cells. B) Plants. C) Nucleus. D) Microscopes. Show Answer Correct Answer: A) Cells. 6. How many types of cell are their according to shape? A) 4. B) 2. C) 3. D) 1. Show Answer Correct Answer: C) 3. 7. Choose the consequence that most specifically predicts the response of a cell to a substance that inhibits messenger RNA synthesis A) Inhibits protein synthesis. B) Inhibits DNA synthesis. C) Stimulates protein synthesis. D) Stimulates DNA synthesis. Show Answer Correct Answer: A) Inhibits protein synthesis. 8. Grace has a list of her weekly grocery expenses:$ 30, $ 25, $ 40, and $ 35. To find the ..... she adds up all the numbers and then divides by how many numbers she has. A) Mean. B) Median. C) Mode. D) Range. Show Answer Correct Answer: A) Mean. 9. Which tissue provide support and mechanical strength to the plant? A) Parenchyma tissue. B) Sclerenchyma tissue. C) Xylem tissue. D) Collenchyma tisssue. Show Answer Correct Answer: B) Sclerenchyma tissue. 10. What is the cytoplasm's role in the cell? A) It is the 'brain' of the cell. B) It is the 'workplace' where chemical reactions occur. C) It produces energy. D) It captures sunlight energy. Show Answer Correct Answer: B) It is the 'workplace' where chemical reactions occur. 11. What is the function of lysosomes in animal cells? A) Photosynthesis. B) Digestion of waste materials. C) Protein synthesis. D) DNA replication. Show Answer Correct Answer: B) Digestion of waste materials. 12. Contains the genetic material, DNA, and codes the instructions for making proteins and other important molecules. A) Ribosomes. B) Nucleus. C) Vacuoles. D) Cell wall. Show Answer Correct Answer: B) Nucleus. 13. Which of the following statement is incorrect about Gram positive bacteria? A) Thickness of the wall is 20-80 nm. B) Presence of 2 layers in wall. C) Peptidoglycan content is more than 50%. D) Teichoic acid is present in wall. Show Answer Correct Answer: B) Presence of 2 layers in wall. 14. What is the function of vacuole A) Storage of food and water. B) Protein synthesis. C) All the above. D) None of the above. Show Answer Correct Answer: A) Storage of food and water. 15. Organelles where photosynthesis takes place are A) Chloroplasts. B) Nuticgibdrua. C) Vacuoles. D) Cytoplasm. Show Answer Correct Answer: A) Chloroplasts. 16. Sunlight A) Plant cell energy source. B) Animal cell energy source. C) Soil nutrient. D) Water source for plants. Show Answer Correct Answer: A) Plant cell energy source. 17. Assembles proteins for release or for other organelles. The rough endoplasmic reticulum has ribosomes on its surface. A) Endoplasmic reticulum. B) Vacuoles. C) Cytoskeleton. D) Cell membrane. Show Answer Correct Answer: A) Endoplasmic reticulum. 18. Where does photosynthesis occur? A) Mitochondria. B) Stomata. C) Xylem. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 19. This structure is a flexible covering that protects the inside of the cell A) Cell Membrane. B) Nucleus. C) Proteins. D) Cell Wall. Show Answer Correct Answer: A) Cell Membrane. 20. Produces proteins A) Endoplasmic reticulum. B) Ribosomes. C) Golgi apparatus. D) Mitochondria. Show Answer Correct Answer: A) Endoplasmic reticulum. 21. What is the significance of understanding the molecular basis of physiological processes? A) It helps in understanding diseases. B) It only focuses on genetics. C) It is not significant. D) It is only for theoretical knowledge. Show Answer Correct Answer: A) It helps in understanding diseases. 22. If dense bone lacked canaliculi: A) There would be no blood supply to the cells. B) Diffusion between cells would not be possible. C) There would be no nerve supply to the tissue. D) The extracellular matrix would not be formed by osteoblasts. Show Answer Correct Answer: B) Diffusion between cells would not be possible. 23. What is the function of a cell wall? A) To protect and support the cell. B) To perform different functions in each cell. C) To prevent water from passing through it. D) To prevent oxygen from entering the cell. Show Answer Correct Answer: A) To protect and support the cell. 24. Cell wall A) Plant cells have a cell wall, a structure outside the plasma membrane. B) Animal cells have a cell wall that provides rigidity. C) Cell walls are found in all types of cells, including bacteria. D) The cell wall is a flexible structure that allows for cell movement. Show Answer Correct Answer: A) Plant cells have a cell wall, a structure outside the plasma membrane. 25. Which of the following is a function of the cell membrane? A) DNA replication. B) Selective permeability. C) Protein synthesis. D) Photosynthesis. Show Answer Correct Answer: B) Selective permeability. ← 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