This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Science > Cell Structure And Functions > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 24 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which early scientist first discovered and named cells? A) Robert Hooke. B) Theodore Schwann. C) Robert Brown. D) Matthias Schleiden. Show Answer Correct Answer: A) Robert Hooke. 2. Name the organelle responsible for producing energy in a cell. A) Mitochondria. B) Endoplasmic reticulum. C) Ribosomes. D) Golgi apparatus. Show Answer Correct Answer: A) Mitochondria. 3. Creates energy and is the powerhouse of the cell in both plant and animal cells. A) Ribosomes. B) Chloroplast. C) Mitochondria. D) Cytoplasm. Show Answer Correct Answer: C) Mitochondria. 4. Cell that can be seen by the naked eyes ..... A) Hen's egg. B) Ostrich eggs. C) Only option a. D) Both option A and B. E) None of the above. Show Answer Correct Answer: D) Both option A and B. 5. A scientist observes that after mitosis, two daughter cells are produced. She wants to confirm that the genetic material in both cells is identical. What method could she use? A) Compare the number of mitochondria in each cell. B) Analyze the DNA sequences in both cells. C) Measure the size of the cells. D) Observe the color of the cellsTagsVA.LS.2.d. Show Answer Correct Answer: B) Analyze the DNA sequences in both cells. 6. Describe the structure and function of the mitochondria. A) Mitochondria are not organelles found in eukaryotic cells. B) The mitochondria are double-membrane-bound organelles responsible for producing ATP through cellular respiration. C) Mitochondria have no role in energy production within cells. D) The mitochondria are single-membrane-bound organelles responsible for photosynthesis. Show Answer Correct Answer: B) The mitochondria are double-membrane-bound organelles responsible for producing ATP through cellular respiration. 7. What is the main role of the cell membrane? A) To produce energy for the cell. B) To control what enters and leaves the cell. C) To store water and nutrients. D) To provide structure and support. Show Answer Correct Answer: B) To control what enters and leaves the cell. 8. During a biology class, Liam, Evelyn, and Grace were discussing the function of the cytoplasm in a cell. What is the primary function of the cytoplasm? A) Providing structural support. B) Storing genetic information. C) Regulating molecular transport. D) Producing energy. Show Answer Correct Answer: A) Providing structural support. 9. Organisms made up of multiple cells are called A) Multicellular. B) Unicellular. C) All the above. D) None of the above. Show Answer Correct Answer: A) Multicellular. 10. You are given two unknown cell samples. One has a cell wall and chloroplasts, and the other does not. How would you determine which is a plant cell and which is an animal cell? A) The cell with a cell wall and chloroplasts is a plant cell; the other is an animal cell. B) The cell with a cell wall and chloroplasts is an animal cell; the other is a plant cell. C) Both are plant cells. D) Both are animal cells.TagsVA.LS.2.c. Show Answer Correct Answer: A) The cell with a cell wall and chloroplasts is a plant cell; the other is an animal cell. 11. What is the primary function of ribosomes in the cell? A) Lipid synthesis. B) Carbohydrate metabolismTagsDOK Level 2:Skill/Concept. C) DNA replication. D) Protein synthesis. Show Answer Correct Answer: D) Protein synthesis. 12. What is the significance of cell theory in biology? A) It emphasizes cellular organization. B) It describes the behavior of non-living things. C) It explains the origin of life. D) It focuses on genetic variations. Show Answer Correct Answer: A) It emphasizes cellular organization. 13. What are the basic structural and functional units of a living organisms? A) Organisms. B) Cells. C) Tissues. D) Organs. Show Answer Correct Answer: B) Cells. 14. What is the fluid inside a cell called? A) Cytoplasm. B) Water. C) Orange Juice. D) Endoplasimic Reticulum. Show Answer Correct Answer: A) Cytoplasm. 15. Includes millions of ribosomes, protein folding, production, and dispatching of proteins A) Nucleus. B) Smooth ER. C) Rough ER. D) Mitochondria. Show Answer Correct Answer: C) Rough ER. 16. Bacteria, protist, animal and plant cells all have a ..... A) Cell membrane. B) Nucleus. C) Chloroplasts. D) Cell wall. Show Answer Correct Answer: A) Cell membrane. 17. Scottish botanist Robert Brown discovered the central part of the cell A) , the nucleus. B) Cytoplasm,. C) Cell membrane. D) None of the above. Show Answer Correct Answer: A) , the nucleus. 18. If a plant cell is placed in a solution with a lower concentration of water than inside the cell, what will most likely happen? A) Water will move out of the cell. B) The cell will divide. C) Water will move into the cell. D) The cell will produce more chloroplastsTagsVA.LS.2.e. Show Answer Correct Answer: A) Water will move out of the cell. 19. THE CELL PROVIDES STRUCTURE FOR THE BODY, TAK EIN NUTRIENTS FORM FOOD, CONVERT THOSE NUTRIENTS INTO ENERGY, AND CARRY OUT SPECIALIZED FUNCTIONS A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 20. Network of membranes attached to the nucleus. A) MEMBRANE. B) CYTOPLASM. C) RIBOSOMES. D) ENDOPLASMIC RETICULUM. Show Answer Correct Answer: D) ENDOPLASMIC RETICULUM. 21. Assertion (A):Mitochondria are double-membraned organelles. Reason (R):The inner membrane is folded into cristae to increase surface area for ATP production. 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. 22. Each organ is made up of smaller parts called A) Diaper. B) Cell. C) Nucleus. D) Tissue. Show Answer Correct Answer: D) Tissue. 23. What is the function of the cytoskeleton in a cell? A) Structural support, cell movement, intracellular transport. B) Energy production, waste removal, DNA replication. C) All the above. D) None of the above. Show Answer Correct Answer: A) Structural support, cell movement, intracellular transport. 24. Control cell activities and contains DNA A) Cell Membrane. B) Mitochondria. C) Vacuole. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 25. How do microorganisms contribute to medicine as mentioned in the passage? A) They are used to make antibiotics and vaccines. B) They cause infections. C) They are not used in medicine. D) They are used to make vitamins. Show Answer Correct Answer: A) They are used to make antibiotics and vaccines. 26. Cells have particular structures that perform specific jobs. These structures are known as ..... A) Systems. B) Tissues. C) Organs. D) Organelles. Show Answer Correct Answer: D) Organelles. 27. They are the sites of protein synthesis, A) Ribosomes. B) Endoplasmic reticulum (ER). C) Mitochondria. D) None of the above. Show Answer Correct Answer: A) Ribosomes. 28. A lysosome's main function is to ..... A) Fight off infections. B) Protect the cell. C) Break down materials. D) Use light energy to make food. Show Answer Correct Answer: C) Break down materials. 29. All the material inside the plasma membrane of a cell is referred to as A) Endoplasm. B) Cytoplasm. C) Cytosol. D) Cytoskeleton. Show Answer Correct Answer: B) Cytoplasm. 30. If a cell's mitochondria are damaged, which process would be most affected? A) Energy production. B) DNA replication. C) Cell division. D) Protein synthesis. Show Answer Correct Answer: A) Energy production. 31. In eukaryotes, the ..... is where cellular respiration takes place. A) Golgi apparatus. B) Nucleus. C) Vacuole. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 32. Cells with a nucleus and membrane-bound organelles are called ..... A) Bacteria. B) Eukaryotes. C) Prokaryotes. D) Protists. Show Answer Correct Answer: B) Eukaryotes. 33. Assertion (A):Mitochondria have their own DNA. Reason (R):This allows them to replicate independently within the cell. 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. 34. The smallest unit of a living thing are A) Atoms. B) DNA. C) Cells. D) Organelles. Show Answer Correct Answer: C) Cells. 35. What is the function of peroxisomes? A) Breaks down fatty acids and detoxifies harmful substances. B) Conducts photosynthesis. C) Synthesizes proteins. D) Stores water and nutrients. Show Answer Correct Answer: A) Breaks down fatty acids and detoxifies harmful substances. 36. The other name of cell membrane is A) Plasma membrane. B) Cell wall. C) Nuclear membrane. D) None of these. Show Answer Correct Answer: A) Plasma membrane. 37. Prokaryotic Cells do not have A) Nuclear membrane. B) Cell membrane. C) Cytoplasm. D) Nuclear material. Show Answer Correct Answer: A) Nuclear membrane. 38. Explain the role of ribosomes in a cell. A) Ribosomes are responsible for cell division. B) Ribosomes generate energy for cellular processes. C) Ribosomes store genetic information for the cell. D) Ribosomes synthesize proteins by translating mRNA into polypeptides. Show Answer Correct Answer: D) Ribosomes synthesize proteins by translating mRNA into polypeptides. 39. Most of the cell's energy is produced within these rod-shaped organelles. This organelle is considered the "powerhouse" of the cell. A) Endoplasmic reticulum. B) Ribosomes. C) Mitochondria. D) Vacuole. Show Answer Correct Answer: C) Mitochondria. 40. A cell is observed to have a cell membrane, cytoplasm, and ribosomes, but no nucleus. Which of the following best describes this cell? A) Animal cell. B) Eukaryotic cell. C) Plant cell. D) Prokaryotic cell. Show Answer Correct Answer: D) Prokaryotic cell. 41. What role do lysosomes play in the cell? A) Protein synthesis. B) Photosynthesis. C) Energy production. D) Digestion of cellular waste. Show Answer Correct Answer: D) Digestion of cellular waste. 42. Protein Synthesis A) Of storing protein molecules. B) Of breaking down protein molecules. C) Of creating protein molecules. D) Of transporting protein molecules. Show Answer Correct Answer: C) Of creating protein molecules. 43. This fluid in the cell is where the organelles are found. It contains water and chemicals the cell needs. A) Blood. B) Cytoplasm. C) Plasma. D) None of the above. Show Answer Correct Answer: B) Cytoplasm. 44. Cells were discovered by ..... in ..... year? A) Theodor Schwann, 1667. B) Lan Wilmut, 1668. C) Robert Hooke, 1665. D) Mathias Schleiden, 1666. Show Answer Correct Answer: C) Robert Hooke, 1665. 45. The nucleus is like the ..... of the cell. A) Foot. B) Hand. C) Stomach. D) Brain. Show Answer Correct Answer: D) Brain. 46. How does the endoplasmic reticulum contribute to cell function? A) It stores energy. B) It assists in the production and transport of proteins and lipids. C) It provides structural support. D) It controls cell division. Show Answer Correct Answer: B) It assists in the production and transport of proteins and lipids. 47. A series of folded membranes from the nucleus to the cell membrane that produce, package and transport proteins through the cell; may or may not have ribosomes on its surface. A) Vacuoles. B) Endoplasmic reticulum. C) Golgi bodies. D) Lysosomes. Show Answer Correct Answer: B) Endoplasmic reticulum. 48. What is the role of the plasma membrane in cellular transport? A) The plasma membrane only transports water and does not regulate other substances. B) The plasma membrane allows all substances to pass freely without regulation. C) The plasma membrane is impermeable and does not facilitate any transport. D) The plasma membrane controls cellular transport by being selectively permeable, regulating the entry and exit of substances. Show Answer Correct Answer: D) The plasma membrane controls cellular transport by being selectively permeable, regulating the entry and exit of substances. 49. How do lysosomes contribute to cellular function? A) Lysosomes produce energy for the cell. B) Lysosomes are involved in protein synthesis. C) Lysosomes store genetic information. D) Lysosomes contribute to cellular function by digesting waste and recycling cellular components. Show Answer Correct Answer: D) Lysosomes contribute to cellular function by digesting waste and recycling cellular components. 50. Which of the following is NOT TRUE about cells? A) There are many different types with different structures and functions. B) In humans, the nucleus is usually bright red and the mitochondria are bright blue. C) They are microscopic. D) Eukaryotic and Prokaryotic are examples. Show Answer Correct Answer: B) In humans, the nucleus is usually bright red and the mitochondria are bright blue. 51. What cell would make up a small patch of grass? A) Animal. B) Plant. C) Both animal and plant. D) Neither animal nor plant. Show Answer Correct Answer: B) Plant. 52. Which of the following best describes the structure of the cell membrane? A) A single layer of phospholipids with embedded proteins. B) A single layer of proteins with embedded phospholipids. C) A double layer of phospholipids with embedded proteins. D) A double layer of proteins with embedded phospholipidsTagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: C) A double layer of phospholipids with embedded proteins. 53. The Golgi apparatus is what packages ..... onto vesicles in a eukaryotic cell. A) Water. B) Oxygen. C) Proteins. D) Sugars. Show Answer Correct Answer: C) Proteins. 54. Which of the following is the only cell organelle that is capable of converting light energy into chemical energy? A) Vacuole. B) Mitochondrion. C) Endoplasmic reticulum. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 55. Cell is discovered by A) Charse Darwin. B) Robert Brown. C) John Mendal. D) Robert Hooke. Show Answer Correct Answer: D) Robert Hooke. 56. Which of the following is a saclike structure that stores water? A) Golgi apparatus. B) Endoplasmic reticulum. C) Nucleus. D) Vacuole. Show Answer Correct Answer: D) Vacuole. 57. Which cells are the smallest cells in human body? A) Nerve cells. B) White blood cells. C) Brain cells. D) Red blood cells. Show Answer Correct Answer: D) Red blood cells. 58. Which of the following cells can change its shape. A) White blood cell. B) Egg cell. C) Red blood cell. D) None of the above. Show Answer Correct Answer: A) White blood cell. 59. Which organelle is responsible for making ATP by breaking down glucose? A) Chloroplasts. B) Golgi Body. C) Ribosomes. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 60. The microscope used by Robert Hooke was A) Simple microscope. B) Compound microscope. C) Light microscope. D) Both B and C. Show Answer Correct Answer: A) Simple microscope. ← PreviousNext →Related QuizzesScience QuizzesClass 8 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books