This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gel-like substance where work happens within the cell A) Cytoplasm. B) Mitochondria. C) DNA. D) Chloroplasts. Show Answer Correct Answer: A) Cytoplasm. 2. What is the main function of ribosomes in a cell? A) To produce energy. B) To synthesize proteins. C) To store genetic material. D) To transport substances. Show Answer Correct Answer: B) To synthesize proteins. 3. What are the small structures inside of cells that carry out specific functions called? A) Animalcules. B) Organelles. C) Tissues. D) Organs. Show Answer Correct Answer: B) Organelles. 4. A scientist observes a cell with no nucleus under a microscope. Which type of cell is it most likely to be? A) Plant cell. B) Animal cell. C) Prokaryotic cell. D) Fungal cell. Show Answer Correct Answer: C) Prokaryotic cell. 5. Which of the following statements is true about facilitated diffusion? A) Net movements is with the concentration gradient. B) It requires the expenditure of energy (ATP) M. C) It does not require a carrier molecule. D) It moves materials through membrane channels. Show Answer Correct Answer: A) Net movements is with the concentration gradient. 6. Assertion (A):The cell membrane is fluid in nature. Reason (R):The phospholipids and proteins can move laterally within the layer. 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. 7. A student observes a cell under a microscope and sees a cell wall, chloroplasts, and a large central vacuole. What type of cell is the student most likely observing? A) Animal cell. B) Plant cell. C) Bacterial cell. D) Fungal cell. Show Answer Correct Answer: B) Plant cell. 8. Microfilaments are well known for their role in which of the following? A) Ameboid movement. B) Formation of cleavage furrows. C) Contracting of muscle cells. D) Option 1 & 2 only. E) Option 1, 2, and 3. Show Answer Correct Answer: E) Option 1, 2, and 3. 9. What is the difference between prokaryotic and eukaryotic cells? A) Prokaryotic cells can be multicellular; eukaryotic cells are unicellular. B) Prokaryotic cells do not have a nucleus or membrane-bound organelles; eukaryotic cells do. C) Eukaryotic cells are always smaller than prokaryotic cells. D) Prokaryotic cells have a nucleus; eukaryotic cells do not. Show Answer Correct Answer: B) Prokaryotic cells do not have a nucleus or membrane-bound organelles; eukaryotic cells do. 10. ..... consists of phospholipids and embedded proteins. It is selectively permeable and regulates what enters and leaves the cell. A) Nucleus. B) Mitochondria. C) Cell Membrane. D) Golgi Body. Show Answer Correct Answer: C) Cell Membrane. 11. This is a structure inside the nucleus where ribosomes are assembled before they are sent out to the cytoplasm to make proteins. A) Vacuoles. B) Nucleolus. C) Vesicules. D) Nucleus. Show Answer Correct Answer: B) Nucleolus. 12. WHICH IS THE CELL WHICH HAS SPINDLE SHAPE A) MUSCLE CELL. B) NERVE CELL. C) WHITE BLOOD CELLS. D) RED BLOOD CELLS. Show Answer Correct Answer: A) MUSCLE CELL. 13. Define the endomembrane system. A) A system of interconnected organelles that work together to modify, package, and transport lipids and proteins within the cell. B) A network of ribosomes responsible for protein synthesis. C) A collection of mitochondria involved in energy production. D) A series of lysosomes involved in cellular digestion. Show Answer Correct Answer: A) A system of interconnected organelles that work together to modify, package, and transport lipids and proteins within the cell. 14. A researcher finds a cell that contains both a nucleus and mitochondria. What can the researcher conclude about this cell, and why? A) It is a prokaryotic cell, because it has a nucleus. B) It is a eukaryotic cell, because only eukaryotic cells have a nucleus and mitochondria. C) It is a plant cell, because it has mitochondria. D) It is a bacterial cell, because it has a nucleus. Show Answer Correct Answer: B) It is a eukaryotic cell, because only eukaryotic cells have a nucleus and mitochondria. 15. The process by which new cells are formed is known as ..... A) Nucleolisation. B) Cell division. C) Daughtering of cells. D) Cell growth. Show Answer Correct Answer: B) Cell division. 16. How does the structure of the cell membrane help it perform its function? A) Its rigid structure allows it to protect the cell. B) Its flexible, semi-permeable nature allows it to control what enters and leaves the cell. C) Its thick walls prevent all substances from entering. D) Its solid structure allows for energy production. Show Answer Correct Answer: B) Its flexible, semi-permeable nature allows it to control what enters and leaves the cell. 17. Which cell structure is found in plant and animals cells and controls what can come into or leave a cell? A) Cell membrane. B) Cytoplasm. C) Nucleus. D) Vacuole. Show Answer Correct Answer: A) Cell membrane. 18. As a result of cell metabolism A) ATP molecules are produced by aerobic or anaerobic respiration. B) The oxygen we breathe in is used to form water. C) The carbon atoms of food molecules are used to produce carbon dioxide. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. Which of the following is absent in animal cells? A) Cell Membrane. B) Cell Wall. C) Cytoplasm. D) Nucleus. Show Answer Correct Answer: B) Cell Wall. 20. The organelles that clean plant and animal cells by using chemicals to break down food and worn out cell parts are ..... A) Lysosomes. B) Mitochondria. C) Nucleolus. D) Cell Wall. Show Answer Correct Answer: A) Lysosomes. 21. Which type of cytosis involves the engulfing of large particles or cells? A) Pinocytosis. B) Phagocytosis. C) Exocytosis. D) Receptor-mediated endocytosisTagsDOK Level 1:Recall. Show Answer Correct Answer: B) Phagocytosis. 22. Nora is studying plant cells and wonders about the function of vacuoles in them. What is the primary function of vacuoles in plant cells? A) Regulating molecular transport. B) Synthesizing proteins. C) Generating energy. D) Storing nutrients and waste materials. Show Answer Correct Answer: D) Storing nutrients and waste materials. 23. Lack membrane-bound organelles A) Prokaryotic cells. B) Eukaryotic cells. C) All the above. D) None of the above. Show Answer Correct Answer: A) Prokaryotic cells. 24. What is the main function of the cell wall? A) To support and protect the cell. B) To make and store DNA. C) To direct the activities of the cell. D) To help the cell move. Show Answer Correct Answer: A) To support and protect the cell. 25. What do you use to focus the low power objective? A) Eyepiece. B) Coarse adjustment knob. C) Fine adjustment knob. D) Body tube. Show Answer Correct Answer: B) Coarse adjustment knob. ← 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 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 10Class 8 Science Chapter 8 Cell Structure And Functions Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books