This quiz works best with JavaScript enabled. Home > Class 8 > Class 8 Science Chapter 8 Cell Structure And Functions – Quiz 81 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 8 Cell Structure And Functions Quiz 81 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Plants get their nutrients from the soil. If the phosphorus was removed from the soil, what macromolecule would be decreased in the plant? A) Carbohydrate. B) Lipid. C) Protein. D) Nucleic AcidTagsSC.912.L.18.1. Show Answer Correct Answer: D) Nucleic AcidTagsSC.912.L.18.1. 2. Suspends organelles in the cell A) Cytoplasm. B) Cell membrane. C) Cell wall. D) Ribosomes. Show Answer Correct Answer: A) Cytoplasm. 3. Which of the following statements about the sodium-potassium pump is true? A) It transports 3 sodium ions out of the cell in exchange for 2 potassium ions. B) It transports 2 sodium ions out of the cell in exchange for 3 potassium ions. C) It transports water directly out of the cell. D) It transports hydrogen ions out of the cell. Show Answer Correct Answer: A) It transports 3 sodium ions out of the cell in exchange for 2 potassium ions. 4. It is a jelly like substance present between cell membrane and nucleus A) Cytoplasm. B) Protoplasm. C) Mitochondria. D) Lysomes. Show Answer Correct Answer: A) Cytoplasm. 5. What is diffusion in the context of cell biology? A) The process of cells dividing. B) The movement of substances from low to high concentration. C) The movement of substances from high to low concentration. D) The process of cells dying. Show Answer Correct Answer: C) The movement of substances from high to low concentration. 6. Which of the following is/are example of unicellular organism(s):(I) Amoeba (II) Paramecium (III) White Blood Cell (IV) Hen A) Only I. B) Both I and II. C) I, II and III. D) All of them. Show Answer Correct Answer: B) Both I and II. 7. How does the structure of the cell wall contribute to its function? A) The cell wall is flexible, allowing the cell to change shape easily. B) The cell wall is rigid, providing support and protection to the cell. C) The cell wall is permeable, allowing all substances to pass through. D) The cell wall is made of proteins, aiding in cellular respirationTagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: B) The cell wall is rigid, providing support and protection to the cell. 8. Which structure surrounds the outside of the plasma membrane and provides support to the cell? A) Cytoskeleton. B) Golgi apparatus. C) Cell wall. D) Plasma membrane. Show Answer Correct Answer: C) Cell wall. 9. What is the primary function of the ribosome in a cell? A) Energy production. B) Protein synthesis. C) Lipid storage. D) DNA replication. Show Answer Correct Answer: B) Protein synthesis. 10. Which organelle is known as the powerhouse of the cell because it converts food into energy? A) Chloroplast. B) Nucleus. C) Endoplasmic Reticulum. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 11. Rough E.R. contains which small structures? A) Mitochondria. B) Lipids. C) Golgi bodies. D) Ribosomes. Show Answer Correct Answer: D) Ribosomes. 12. What do ribosomes synthesize? A) DNA. B) Proteins from amino acids. C) Starch. D) Lipids. Show Answer Correct Answer: B) Proteins from amino acids. 13. Assertion (A):The cell membrane contains proteins embedded within the phospholipid bilayer. Reason (R):These proteins help in transport and communication across the membrane. 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. 14. Benjamin, Abigail, and Jackson are studying biology and they come across a diagram of a eukaryotic cell. They are trying to understand the function of the nucleus in the cell. Can you help them understand what the nucleus does? A) It helps in regulating molecular transport within the cell. B) It is responsible for synthesizing proteins. C) It is the powerhouse of the cell, generating energy. D) It is the storage center, storing genetic information. Show Answer Correct Answer: D) It is the storage center, storing genetic information. 15. This organelle is responsible for photosynthesis. A) CHROMATIN. B) CELLWALL. C) VACUOLES. D) CHLOROPLAST. Show Answer Correct Answer: D) CHLOROPLAST. 16. Which type of epithelial cells will provide the most protection against abrasion, such as your foot rubbing against the bottom of your shoe? A) Simple squamous. B) Stratified squamous. C) Simple cuboidal. D) Simple columnar. Show Answer Correct Answer: B) Stratified squamous. 17. The projections of varying lengths protruding out of its body. These are called ..... A) Tissues. B) Pesudopodia. C) All the above. D) None of the above. Show Answer Correct Answer: B) Pesudopodia. 18. A cell with organized nucleus is called A) Prokaryotic cell. B) Eukaryotic cell. C) All the above. D) None of the above. Show Answer Correct Answer: B) Eukaryotic cell. 19. THE 3 BASIC COMPONENTS OF A CELL- A) CELL MEMBRANE, CYTOPLASM, NUCLEUS. B) CELL WALL, VACUOLE, NUCLEUS. C) CHROMOSOMES, CYTOPLASM, CELL MEMBRANE. D) NUCLEOLUS, CHROMOSOMES, CYTOPLASM. Show Answer Correct Answer: A) CELL MEMBRANE, CYTOPLASM, NUCLEUS. 20. Green colored plastids are called ..... A) Vacuole. B) Chloroplasts. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chloroplasts. 21. The fibres of nerve cells may be how many metre long? A) Two metre. B) One metre. C) Three metre. D) One and a half metre. Show Answer Correct Answer: B) One metre. 22. What is the relationship between mitochondria and energy production in cells? A) Mitochondria store energy in the form of glucose. B) Mitochondria convert glucose into ATP, the energy currency of the cell. C) Mitochondria produce energy by breaking down proteins. D) Mitochondria use sunlight to produce energy. Show Answer Correct Answer: B) Mitochondria convert glucose into ATP, the energy currency of the cell. 23. What is the primary role of the cell membrane in animal cells? A) To conduct photosynthesis. B) To regulate the movement of substances in and out of the cell. C) To store genetic material. D) To produce ribosomal RNA. Show Answer Correct Answer: B) To regulate the movement of substances in and out of the cell. 24. Provides structural support and helps with cell shape A) Mitochondria. B) Vacuole. C) Microtubules. D) Microtubules. Show Answer Correct Answer: C) Microtubules. 25. Aria is studying cell biology and comes across the term 'lysosomes'. What is the function of lysosomes in a cell? A) Breaking down molecules. B) Generating energy. C) Regulating molecular transport. D) Synthesizing proteins. Show Answer Correct Answer: A) Breaking down molecules. ← 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