This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 8 Cell The Unit Of Life – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Mesosomes are the infoldings of cell membrane, They-I-Help in cell wall formation, DNA replication & respiration.II-increase in surface area of plasma membrane.III-are present in both prokaryotic & eukaryotic cells.Choose the correct option- A) II & III. B) I & III. C) I, II & III. D) I & II. Show Answer Correct Answer: D) I & II. 2. Arrangement of microtubules in flagellum is: A) 9 peripheral doublets + 2 central singlets. B) 9 peripheral doublets + 2 central triplets. C) 9 peripheral doublets + 2 central singlet. D) 9 peripheral singlets + 2 central doublets. Show Answer Correct Answer: D) 9 peripheral singlets + 2 central doublets. 3. The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are A) Stroma. B) Stroma lamellae. C) Grana. D) Cristae. Show Answer Correct Answer: C) Grana. 4. Free ribosomes synthesize: A) Membrane proteins. B) Cytosolic proteins. C) Lysosomal enzymes. D) Secretory proteins. Show Answer Correct Answer: B) Cytosolic proteins. 5. Polymorphic cell organelle is: A) Chloroplast. B) Ribosome. C) Lysosome. D) Nucleus. Show Answer Correct Answer: B) Ribosome. 6. Which of the following represents the features of lysosomes? A) A lower pH than the cytoplasm. B) Reduced hydrolase activity. C) Double membrane envelope. D) All of these. Show Answer Correct Answer: A) A lower pH than the cytoplasm. 7. Which of the following do not have cell wall in their cells: A) Bacterium. B) Animals. C) Fungi. D) Plants. Show Answer Correct Answer: B) Animals. 8. The Golgi complex participates in A) Fatty acid breakdown. B) Activation of amino acid. C) Formation of secretory vesicles. D) Respiration in bacteria. Show Answer Correct Answer: C) Formation of secretory vesicles. 9. Bacterial flagellum is composed of A) 2 parts. B) 4 parts. C) 1 part. D) 3 parts. Show Answer Correct Answer: D) 3 parts. 10. Unicellular organism are A) Not capable of independent existence because they cannot perform all the essential functions of life. B) Not capable of independent existence but they can perform all the essential vital functions. C) Are capable of independent existence and perform all the essential vital functions. D) Are capable to lead independent existence but they perform some vital functions. Show Answer Correct Answer: C) Are capable of independent existence and perform all the essential vital functions. 11. The matrix of mitochondria possesses A) Single circular DNA molecule. B) Few RNA molecules. C) 70S Ribosomes. D) All the above. Show Answer Correct Answer: D) All the above. 12. Elaioplasts store: A) Proteins. B) Pigments. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: D) Lipids. 13. Which is the best way to separate intact chloroplast from green leaves of angio spermic plant? A) 10% sucrose solution. B) Alcohol. C) Petrol-ether. D) Chloroform. Show Answer Correct Answer: B) Alcohol. 14. A common characteristic feature of plant sieve tube cells and most of the mammalianerythrocytesis A) Presence of mitochondria. B) Absence of cell wall. C) Presence of haemoglobin. D) Absence of nucleus. Show Answer Correct Answer: D) Absence of nucleus. 15. Where does glycosylation of protein occur? A) Chloroplast. B) Mitochondria. C) Lysosomes. D) Endoplasmic reticulum. Show Answer Correct Answer: D) Endoplasmic reticulum. 16. The pH inside lysosome is approximately: A) 8. B) 5. C) 6. D) 7. Show Answer Correct Answer: B) 5. 17. Choose the incorrect statement regarding cell membrane. A) Generally smaller molecules pass easily and readily than large molecules. B) Water soluble substance pass through easily and readily than lipid soluble substance. C) In addition to phospholipid membrane it also contains cholesterol. D) None of these. Show Answer Correct Answer: D) None of these. 18. The movement of cilia and flagella is due to the presence of A) Central sheath. B) Radial spokes. C) Dyneins. D) Singlet microtubules. Show Answer Correct Answer: C) Dyneins. 19. Lysosomes are the reservoirs (storehouses) of A) Hydrolytic enzymes. B) Oxidative enzymes. C) Secretory glycoproteins. D) RNA and proteins. Show Answer Correct Answer: A) Hydrolytic enzymes. 20. Read the given statements and select the correct option.Statement 1:Chloroplast and mitochondria are semi-autonomous bodies.Statement 2:Chloroplast and mitochondria have their own DNA and protein synthesizing machinery. A) Both statements 1 and 2 are correct. B) Statement 1 is correct but statement 2 is incorrect. C) Statement 1 is incorrect but statement 2 is correct. D) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: A) Both statements 1 and 2 are correct. 21. Centrosome is present in: A) Prokaryotes. B) Plant cells. C) Animal cells. D) Fungi. Show Answer Correct Answer: C) Animal cells. 22. Nutrients and oxygen enter cells through the A) Nucleus. B) Mitochondria. C) Ribosomes. D) Cell membrane. Show Answer Correct Answer: D) Cell membrane. 23. The shorter and longer arms of a submetacentric chromosome are referred to as A) S-arm and l-arm respectively. B) P-arm and q-arm respectively. C) Q-arm and p-arm respectively. D) M-arm and n-arm respectively. Show Answer Correct Answer: B) P-arm and q-arm respectively. 24. The cells involved in large amounts of lipid synthesis do not possess this organelle on the endoplasmic reticulum A) Lysosome. B) Ribosomes. C) Mitochondrion. D) Golgi apparatus. Show Answer Correct Answer: B) Ribosomes. 25. In Amoeba the ..... is important for excretion. A) Cyanophycean granules. B) Contractile vacuole. C) Gas vesicles. D) Food vacuole. Show Answer Correct Answer: B) Contractile vacuole. 26. The ..... determines the shape of the cell and provides a strong structural support to prevent the bacterium from bursting or collapsing. A) Tonoplast. B) Vacuole. C) Cell wall. D) Glycocalyx. Show Answer Correct Answer: C) Cell wall. 27. The Tricarboxylic acid cycle responsible for aerobic respiration in eukaryotes occurs in A) Golgi apparatus. B) Peroxisomes. C) Mitochondria. D) Centriole. Show Answer Correct Answer: C) Mitochondria. 28. Which of following is mismatched? A) Bacteria-Peptidoglycans. B) Algae-Galactans, mannose. C) Fungi-Cellulose. D) Dinoflagellate-Stiff cellulose plate. Show Answer Correct Answer: C) Fungi-Cellulose. 29. The L shape chromosome found in the Anaphase stage of the mitosis cell division is A) Metacentric. B) Telocentric. C) Sub-metacentric. D) Acrocentric. Show Answer Correct Answer: C) Sub-metacentric. 30. The structure present in prokaryotes analogous to eukaryotic mitochondria is A) Cell wall. B) Cell membrane. C) Mesosomes. D) Cilia. Show Answer Correct Answer: C) Mesosomes. 31. Cytoskeleton is NOT involved in: A) Cell motility. B) Intracellular transport. C) Cell division. D) Protein synthesis. Show Answer Correct Answer: D) Protein synthesis. 32. Cell recognition and adhesion are facilitated by components of plasma membrane. These components are generally A) Protein molecules alone. B) Lipids alone. C) Both lipids and proteins. D) Glycolipids and glycoproteins. Show Answer Correct Answer: D) Glycolipids and glycoproteins. 33. Primary cell wall formed by A) Intussusception. B) Apposition. C) Intussusception and lignification. D) Mineralization. Show Answer Correct Answer: A) Intussusception. 34. Centre of phosphorylation is . A) Mitochondria. B) Ribosome. C) Peroxisome. D) Oxisome. Show Answer Correct Answer: A) Mitochondria. 35. Assertion:'s' in '80s' represent sedimentation coefficientReason:Sedimentation coefficient is direct measure of density and size of ribosome. A) If both the assertion and the reason are true and the reason is a correct explanation of theassertion. B) If both the assertion and reason are true but the reason is not a correct explanation of theassertion. C) If the assertion is true but the reason is false. D) If both the assertion and reason are false. Show Answer Correct Answer: C) If the assertion is true but the reason is false. 36. Gram negative bacteria cell wall consist of A) Murein. B) Peptidoglycan. C) Peptidoglycan+outer membrane+Lipopolysaccharide. D) Peptidoglycan+outer membrane. Show Answer Correct Answer: C) Peptidoglycan+outer membrane+Lipopolysaccharide. 37. The most likely method, used to determine the structural details of a cell organelle is A) Microdissection. B) Phase contrast microscopy. C) Electron microscopy. D) Autoradiography. Show Answer Correct Answer: C) Electron microscopy. 38. Assertion-lysosomes help in digestion of food particles and worn out organelles in a cellReason-lysosomes contain a large amount of respiratory enzymes A) Both A & R are true and R is the correctexplanation of A. B) Both A & R are true but R is not thecorrect explanation of A. C) A is ture but R is false. D) Both A & R are false. Show Answer Correct Answer: C) A is ture but R is false. 39. Peptidyl transferase enzyme is found on: A) Golgi body. B) Ribosomes. C) E.R. D) Cytoplasm. Show Answer Correct Answer: B) Ribosomes. 40. Why do you think plant cell has fixed shape? A) Has chloroplast. B) Has cytoplasm. C) Has mitochondria. D) Has cell wall. Show Answer Correct Answer: D) Has cell wall. 41. Which of the following is an energy dependent process? A) Endosmosis. B) Active transport. C) Facilitated diffusion. D) Exosmosis. Show Answer Correct Answer: B) Active transport. 42. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is ..... A) Chloroplast. B) Mitochondria. C) Lysosome. D) Endoplasmic reticulum. Show Answer Correct Answer: D) Endoplasmic reticulum. 43. Inanimate things have A) One Cell. B) No cell. C) One or multiple cells. D) Two Cells. Show Answer Correct Answer: B) No cell. 44. If you remove the fimbriae from the bacterial cell, which of the following would you expect to happen? A) The shape of bacteria would change. B) The bacterial would not adhere to the host tissue. C) Transportation of molecules across the membrane would stop. D) The bacteria could no longer swim. Show Answer Correct Answer: B) The bacterial would not adhere to the host tissue. 45. What are the components that exist in animal cells? A) Nucleus, cytoplasm, mitochondria, cell membrane. B) Cell membrane, cell wall, cytoplasm, mitochondria. C) Chloroplast, nucleus, cell wall, mitochondria. D) Mitochondria, vacuole, cell membrane, nucleus. Show Answer Correct Answer: A) Nucleus, cytoplasm, mitochondria, cell membrane. 46. Consider the following statements-I-the cisternae in golgi complex have cis face & trans faceII-the cis face & trans face of golgi complex are called as Maturing face & Forming phase respectively A) Both I & II are correct. B) I is correct but II is incorrect. C) I Is incorrect but II is correct. D) Both I & II are incorrect. Show Answer Correct Answer: B) I is correct but II is incorrect. 47. Vacuole is covered by a membrane called . A) Plasmalemma. B) Cell membrane. C) Cell wall. D) Tonoplast. Show Answer Correct Answer: D) Tonoplast. 48. Find out all the proteins that makeup eukaryotic flagella- A) Actin, myosin, dyenin, nexin & tubuli. B) Tubulin, dyenin, nexin & flagellin. C) Nexin, tubulin & flagellin. D) Tubulin, nexin & dyenin. Show Answer Correct Answer: D) Tubulin, nexin & dyenin. 49. In which year Matthias Schleiden examined a large number of plants and observed that allplants are composed of different kinds of cells which form the tissues of the plant? A) 1738. B) 1838. C) 1638. D) 1839. Show Answer Correct Answer: B) 1838. 50. ..... organelle, if removed, the cell dies A) Cell wall. B) Ribosomes. C) Nucleus. D) Centriole. Show Answer Correct Answer: C) Nucleus. 51. Which of the following statements is true for secretory cells? A) Only Smooth Endoplasmic Reticulum (SER) is present. B) Golgi apparatus is absent. C) Rough Endoplasmic Reticulum (RER) is easily observed in the cell. D) Secretory granules are formed in nucleus. Show Answer Correct Answer: C) Rough Endoplasmic Reticulum (RER) is easily observed in the cell. 52. Which of the following is the function of mitochondria? A) Medium where chemical reactions occur. B) Controls the flow of material in and out of the cell. C) Produces energy for reactions. D) Absorbs light energy for the process of photosynthesis. Show Answer Correct Answer: C) Produces energy for reactions. 53. An organelle present in both prokaryotes and eukaryotes that synthesizes proteins. A) Ribosome. B) Nucleolus. C) Rough Endoplasmic Reticulum. D) Lysosome. Show Answer Correct Answer: A) Ribosome. 54. Lipids are arranged within the membrane with A) Polar heads towards inner side and the hydrophobic tails towards outer side. B) Both heads and tails toward outer side. C) Head toward outer side and tail towards inside. D) Both heads and tails toward inner side. Show Answer Correct Answer: C) Head toward outer side and tail towards inside. 55. How are prokaryotes and eukaryotes similar? A) They both contain membrane-bound organelles. B) They both have cell membranes. C) The both have nuclei. D) They both have chloroplasts. Show Answer Correct Answer: B) They both have cell membranes. 56. Which of the following is NOT true for Pili? A) Antibiotic resistance. B) Bacterial conjugation. C) Gene transfer. D) Locomotion. Show Answer Correct Answer: D) Locomotion. 57. Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells? A) Polysomes. B) Endoplasmic reticulum. C) Peroxisomes. D) Golgi bodies. Show Answer Correct Answer: D) Golgi bodies. 58. The core of a cilium or flagellum composed of microtubules and their associated proteins is called A) Tubulin. B) Microfilament. C) Blepharoplast. D) Axoneme. Show Answer Correct Answer: D) Axoneme. 59. Which of the following structure consists of Phospholipid Bilayer? A) Cell wall. B) Glycocalyx. C) Peptidoglycan. D) Cell Membrane. E) C. Show Answer Correct Answer: D) Cell Membrane. 60. Ribosomes present in mitochondria are of type: A) 80S. B) 90S. C) 70S. D) 60S. Show Answer Correct Answer: C) 70S. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 7Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 8Class 11 Biology Chapter 8 Cell The Unit Of Life Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books