Class -11-Biology-Chapter 8- cell-Unit of life InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Liver cells have a particular organelle in adundance which contains enzymes that catalyse a series of reactions to detoxify both lipid soluble drugs and various harmful compounds produced by metabolism. Identify the cell organelle. Golgi Apparatus Mitochondria Rough endoplasmic reticulum Smooth endoplasmic reticulum None 2. Which of the following statement regarding mitochondrial membrane is not correct The outer membrane is permeable to all kinds of molecules. The enzymes of the electron transfer chain are embedded in the outer membrane. The outer membrane resembles a sieve. The inner membrane is highly convoluted forming a series of infoldings. None 3. Organelle connected with glycosylation of proteins is ER Mitochondrion Ribosome Chloroplast None 4. If the analogy of a city is applied to a eukaryotic cell, then which of the following statements is correct? Mitochondria as powerhouse and nucleus as slaughter house Mitochondria as powerhouse and Golgi as a cargo sorting facility Nucleus as a library and ribosome as a slaughter house Nucleus as a police station and mitochondria as powerhouse None 5. Which of the following is an important function attributed to lysosomes? All of the above Scavenging of worn out cells Reabsorption in kidney and urinary bladder Bone restoration None 6. What will happen if the organization of a cell is destroyed due to some physical or chemical influence? Lysis of the whole cell will occur due to the enzymes released by lysosomes. Plasmolysis of the whole cell will occur due to the hormones released by lysosomes. Lysis of the whole cell will occur due to the hormones released by lysosomes. Plasmolysis of the whole cell will occur due to the enzymes released by lysosomes. None 7. The disulphide bonds acting as polypeptide staples are formed in Endoplasmic reticulum Cytosol Lysosomes Golgi complex None 8. Identify the incorrect statement from the following: Mitochondria is related with the destruction of plasma membrane. All of the above. Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively. Nucleoid is present inside the nucleoplasm of eukaryotic nucleus. None 9. Which of the following differentiates the cell membranes of eukaryotes and prokaryotes? Gases and water pass through a prokaryotic cell membrane at greater rates than through those of eukaryotes. Eukaryotic cell membranes contain more proteins and larger phospholipids. Prokaryotic cell membranes are thinner and contain more proteins. Many functions that are compartmentalized within organelles of eukaryotes are associated with the cell membranes of prokaryotes. None 10. Ribosomes are attached to the endoplasmic reticulum through glycoproteins known as Ribophorin I and II. Which subunit of ribosome get attached to the endoplasmic reticulum? tRNA Large subunit mRNA Small subunit None 11. Correct the given statements by replacing the underlined words and select the correct option. (i) The viscous fluid present in the nucleus is called cytoplasm.(ii) Vacuoles are rod shaped structures which oxidize food to provide energy.(iii) Mitochondria contain green pigment chlorophyll and take part in photosynthesis.(iv) Lysosomes take part in synthesis of protein. (i) Protoplasm, (ii) Ribosomes, (iii) Centrosome, (iv) Golgi bodies (i) Nucleoplasm, (ii) Mitochondria, (iii) Chloroplasts, (iv) Ribosomes (i) Nucleoplasm, (ii) Lysosomes, (iii) Plastids, (iv) Centrosome (i) Protoplasm, (ii) Plastids, (iii) Endoplasmic reticulum, (iv) Ribosomes None 12. Ribosomes are essential for protein synthesis, but they are present in mitochondria and plastids, the sites of respiration and photosynthesis. What is the role of ribosomes in these cell organelles? Ribosomes transport ATP formed in respiration and photosynthesis to cytoplasm through endoplasmic reticulum All the above are correct Sub units of some required proteins are synthesized in these organelles Ribosomes transport RNA and DNA to cytoplasm None 13. Find out the incorrect statements from the following. Nucleic acids is present inside the nucleoplasm of eukaryotic nucleus Rough ER and smooth ER produce proteins and lipids respectively. Enzymes packed in lysosomes are made through rough chloroplast. Lysosome is related with the destruction of products which enters through plasma membrane. None 14. All students performed an experiment in which they put two different cells P and Q in pure water. Cell P swelled up and burst eventually while cell Q became tight and firm but did not burst.Which of the following is the most appropriate inference? Cell sap of cell P is isotonic to the pure water. Cell P has been obtained from a plant. Cell Q is a bacterium. Cell sap of cell Q is isotonic to pure water. None 15. Alcohol consumption adversely affects the digestion of proteins within liver cells, which can eventually lead to liver damage. Given this information, which organelle in liver cells is most directly affected? Lysosome Nucleus Golgi Apparatus Rough ER None 16. Starch grain in potato tuber is located in Leucoplast Ribosomes Chloroplast Mitochondria None 17. What is the correct sequence of organelles for the export of material out of a cell? Smooth ER → → Rough ER → → Golgi apparatus Rough ER → → Golgi apparatus → → Smooth ER Rough ER → → Smooth ER → → Golgi apparatus Golgi apparatus → → Rough ER → → Smooth ER None 18. Select the one wrongly paired from the following. Chromatin reticulum- Genetic material DNA Lysosome- 'Suicidal bag' of the cell Mitochondrion- 'Power house' of the cell Ribosome- Single membrane bound organelle None 19. Out of the following organelles, which group is involved in manufacturing substances that are needed by the cell? Lysosome, vacuole, ribosome Rough ER, lysosome, vacuole Vacuole, rough ER, smooth ER Ribosome, rough ER, smooth ER None 20. The presence of DNA in mitochondria and chloroplast supports the hypothesis that ATP is produced in chloroplast as well as mitochondria. Glycolysis occurs in both mitochondria and chloroplast. Chloroplast and mitochondria undergo meiosis and mitosis independent of nucleus. Mitochondria and chloroplast both originated as independent free-living organisms. 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