This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 44 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the primary function of mitochondria in cells? A) To store nutrients. B) To produce energy in the form of ATP. C) To synthesize proteins. D) To control cell division. Show Answer Correct Answer: B) To produce energy in the form of ATP. 2. Size of smallest cell? A) 0.2 to 0.5 mm. B) 0.1 to 0.4 mm. C) 0.2 to 0.6 mm. D) 0.1 to 0.5 mm. Show Answer Correct Answer: D) 0.1 to 0.5 mm. 3. This part of neuron insulates the axon and increases the speed of impulse transmission within neuron A) Cell body. B) Myelin sheath. C) Dendrite. D) Axon terminal. Show Answer Correct Answer: B) Myelin sheath. 4. Cellular respiration and fermentation are used to release energy (ATP) from food; however, ..... requires oxygen. A) Fermentation. B) Cellular respiration. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cellular respiration. 5. Site of photosynthesis A) Mitochondria. B) Chloroplasts. C) Nucleus. D) Ribosomes. Show Answer Correct Answer: B) Chloroplasts. 6. Cell theory is one of the great unifying theories of A) Biology. B) Chemistry. C) Physics. D) Physical science. Show Answer Correct Answer: A) Biology. 7. Nucleus contains thread-like structures called ..... A) Nuclear. B) Genes. C) Chromosomes. D) None of the above. Show Answer Correct Answer: C) Chromosomes. 8. Evaluate the impact of a malfunctioning lysosome on cellular health. A) The cell would be unable to produce energy. B) The cell would accumulate waste and damaged organelles, leading to cellular damage. C) The cell would be unable to synthesize proteins. D) The cell would be unable to divide.TagsDOK Level 3:Strategic Thinking. Show Answer Correct Answer: B) The cell would accumulate waste and damaged organelles, leading to cellular damage. 9. I am a gel like substance that supports the other organelles A) Cell membrane. B) CO2. C) Cytoplasm. D) Chlorine. Show Answer Correct Answer: C) Cytoplasm. 10. Osmosis A) Of water across a selectively permeable membrane. B) Of nutrients through a cell wall. C) Of gases in the atmosphere. D) Of ions in a solution. Show Answer Correct Answer: A) Of water across a selectively permeable membrane. 11. Particles tend to move from an area of high concentration to an area of low concentration in a process known as? A) Osmosis. B) Active Transport. C) Diffusion. D) Nucleus. Show Answer Correct Answer: C) Diffusion. 12. Which organelle helps maintain cell pressure? A) Cytoplasm. B) Vacuole. C) Cell wall. D) Nucleus. Show Answer Correct Answer: B) Vacuole. 13. If a cell is compared to a city, then the Golgi apparatus, acts as the A) Trash service of the cell as it removes waste from the cell. B) Post office of the cell by packaging and sorting proteins. C) Mayor of the cell as it controls all of the cell's activities. D) Electrical plant of the cell by making usable energy. Show Answer Correct Answer: B) Post office of the cell by packaging and sorting proteins. 14. What part of the cell can be called the 'Brain' of the cell? A) Cytoplasm. B) Nucleus. C) Cell membrane. D) Organelle. Show Answer Correct Answer: B) Nucleus. 15. Homeostasis A) Allows for a wildly fluctuating internal environment. B) Is impossible in vertebrates. C) Is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation. D) Is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation. Show Answer Correct Answer: C) Is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation. 16. This structure transports proteins from the Golgi to other areas of the cell. A) Vesicules. B) Vacuoles. C) Nucleus. D) Cell membrane. Show Answer Correct Answer: A) Vesicules. 17. Cells can be described as having a cytoskeleton of internal structures that contribute to the shape, organization, and movement of the cell. Which of the following are part of the cytoskeleton? A) The nuclear envelope. B) Mitochondria. C) Microfilaments. D) Lysosomes. E) Nucleoli. Show Answer Correct Answer: A) The nuclear envelope. 18. The cell membrane which surrounds the cell does not allow anything to pass through it A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. Breaks down glucose to release energy (ATP) for the cell. A) Nucleus. B) Lysosomes. C) Mitochondria. D) Vacuole. Show Answer Correct Answer: C) Mitochondria. 20. Large fluid filled space found in plant cells. A) CHROMATIN. B) CELLWALL. C) VACUOLES. D) CHLOROPLAST. Show Answer Correct Answer: C) VACUOLES. 21. Which of the following are functions of the proteins found in the cell membranes? A) Membrane channels. B) Carrier molecules. C) Enzymes. D) Receptor molecules. E) All the above. Show Answer Correct Answer: E) All the above. 22. The Nucleus and Cytoplasm are together called A) Cell. B) Protoplasm. C) Plastids. D) Chloroplast. Show Answer Correct Answer: B) Protoplasm. 23. I am the "brain" of the cell. I control all cell activities A) Nucleus. B) Lysosome. C) Cytoplatelets. D) Vacuole. Show Answer Correct Answer: A) Nucleus. 24. A student observes onion cells under a microscope and notices a rigid outer layer. What is this structure, and what is its function? A) Cell membrane; controls what enters and leaves the cell. B) Cell wall; provides support and protection. C) Nucleus; stores genetic information. D) Cytoplasm; site of chemical reactionsTagsVA.LS.2.c. Show Answer Correct Answer: B) Cell wall; provides support and protection. 25. Assertion (A):The Golgi apparatus sorts and labels proteins for transport. Reason (R):It adds chemical groups to proteins to direct them to their destination. 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. ← 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