This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 8 Cell The Unit Of Life – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Pili A) Used to attach to a host cell by bacteria. B) Used to exchange genetic material during conjugation in prokaryotes. C) Used for locomotion in prokaryotes. D) This structure acts as an extra layer of protection, helps the cell maintain it's shape, and prevents dehydration. Show Answer Correct Answer: B) Used to exchange genetic material during conjugation in prokaryotes. 2. The fluid filled vacuoles or vesicles which are separated from cytoplasm by a selectively permeable membrane called A) Symplast. B) Aquaplast. C) Hydroplast. D) Tonoplast. Show Answer Correct Answer: D) Tonoplast. 3. Cytoplasmic ribosomes A) 70S. B) 80S. C) Both of the above. D) None of the above. Show Answer Correct Answer: B) 80S. 4. ASSERTION-All plants and animals are composed of cells.REASON-Plants and animals made up of DNA.a) Both Assertion and Reason are correct, and reason is the correct explanation for assertion.b) Both Assertion and Reason are correct, and Reason is not the correct explanation for Assertion.c) Assertion is true but Reason is false.d) Both Assertion and Reason are false. A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 5. Lysosomes are ..... vesicular structures formed by the process of packaging in the ..... A) Membrane bound, Golgi apparatus. B) Membrane bound, Mitochondria. C) Non-membrane bound, Golgi apparatus. D) Non-membrane bound, ER. Show Answer Correct Answer: A) Membrane bound, Golgi apparatus. 6. Which of the following is an organelle of the animal cell only? A) Nucleus. B) Centrosome. C) Cell wall. D) Vacuole. Show Answer Correct Answer: B) Centrosome. 7. Assertion:Centrosomes and centrioles are related to each other. Reason:Centrosome usually contains two cylindrical structures called centrioles A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 8. This function of this organelle is to break down glucose to make cell energy. A) Chloroplasts. B) Mitochondria. C) Nucleus. D) ATP. Show Answer Correct Answer: B) Mitochondria. 9. Cells can undergo x process to form new cells and replace damaged cells. What is x? A) Respiration. B) Division. C) Photosynthesis. D) Homeostasis. Show Answer Correct Answer: B) Division. 10. Study the following statements regarding mitochondria and select the correct ones. A) These are the sites of aerobic respiration. B) Matrix contains single, circular dsDNA molecule, a few RNA molecule, 70S ribosomes. C) Mitochondria divide by fission. D) Mitochondria are fully-autonomous. Show Answer Correct Answer: C) Mitochondria divide by fission. 11. Cell theory is not applicable for A) Bacteria. B) Fungus. C) Algae. D) Virus. Show Answer Correct Answer: D) Virus. 12. The new cells originate A) By bacterial fermentation. B) From abiotic material. C) From pre-existing cells. D) Through regeneration of old cells. Show Answer Correct Answer: C) From pre-existing cells. 13. The arrangement of microtubules in axoneme of flagella is- A) 6 pairs of doublets radially arranged at periphery with a pair of centrally located microtubules. B) 11 pairs of radially arranged doublets at periphery & a single located centrally. C) 9 pairs of doublet at periphery & 9 radial spokes. D) 9 pairs of doublets at periphery & 8 radial spokes. Show Answer Correct Answer: C) 9 pairs of doublet at periphery & 9 radial spokes. 14. Organelle 'X' is the major centre of release of energy in aerobic respiration, but is absent in prokaryotes and anaerobic eukaryotes. It can be stained differentially with janus Green. Identify the organelle X. A) Nucleus. B) Mitochondria. C) Lysosome. D) Rough endoplasmic reticulum. Show Answer Correct Answer: B) Mitochondria. 15. Mitochondria and chloroplast are A) (B) is true but (A) is false. B) Semi-autonomous organelles. C) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesising machinery. D) Both (A) and (B) are false. Show Answer Correct Answer: B) Semi-autonomous organelles. 16. The ..... is the main arena of cellular activities in both the plant and animal cells. A) Vacuole. B) Cytoplasm. C) Nucleoplasm. D) ER. Show Answer Correct Answer: B) Cytoplasm. 17. Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of A) TRNA. B) Protein synthesis. C) MRNA. D) RRNA. Show Answer Correct Answer: D) RRNA. 18. Which one of the following cell organelles is enclosed by a single membrane? A) Lysosomes. B) Nuclei. C) Mitochondria. D) Chloroplasts. Show Answer Correct Answer: A) Lysosomes. 19. Which of the following are not membrane bound? A) Lysosomes. B) Mesosomes. C) Vacuoles. D) Ribosomes. Show Answer Correct Answer: D) Ribosomes. 20. Microtubules are constituents of: A) Centrioles, Spindle fibres and Chromatin. B) Cilia, Flagella and Peroxisomes. C) Spindle fibres, Centrioles and Cilia. D) Centrosome, Nucleosome and Centriole. Show Answer Correct Answer: C) Spindle fibres, Centrioles and Cilia. 21. The first microscope was constructed by which scientist ..... A) Antony van leeuwenhoek. B) Robert hooke. C) Theodar schwann. D) Henrey. Show Answer Correct Answer: A) Antony van leeuwenhoek. 22. Ribosomes are involved in which step of the Central dogma? A) Transcription. B) Translation. C) Translocation. D) All of the above. Show Answer Correct Answer: B) Translation. 23. Prokaryotic DNA is: A) Linear and histone bound. B) Circular and histone bound. C) Circular and naked. D) Linear and naked. Show Answer Correct Answer: C) Circular and naked. 24. Which one is correct about bacterial cell envelope? A) The outermost cell wall folllowed by glycocalyx and then plasma membr. B) The outermost glycocalyx followed by plasma membrane and then celll wall. C) The outermost glycocalyx followed by middle lamallae and then plasmamembrane. D) Innermost plasma membrane followed by cell wall and then glycocalyx. Show Answer Correct Answer: D) Innermost plasma membrane followed by cell wall and then glycocalyx. 25. Mitochondria and chloroplast are semi-autonomous organelles of cell because they: A) Possess their own nucleic acid. B) Have capacity of ATP synthesis. C) Do not reproduce. D) All of the above. Show Answer Correct Answer: D) All of the above. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 8 Cell The Unit Of Life Quiz 1Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 2Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 3Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 4Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 5Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 6Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 7Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 8Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 9Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books