Cell: The Unit of Life PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Cell: The Unit of Life · Set 1 (Q1-30)
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1. $Which of the following statements is not correct?$ (1) $Lysosomes have numerous hydrolytic enzymes.$ (2) $The hydrolytic enzymes of lysosomes are active under acidic pH .$ (3) $Lysosomes are membrane bound structures.$ (4) $Lysosomes are formed by the process of packaging in the endoplasmic reticulum.$ 2. $Which of the following functions is carried out by cytoskeleton in a cell?$ (1) $Transportation$ (2) $Nuclear division$ (3) $Protein synthesis$ (4) $Motility$ 3. $Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?$ (1) $Peroxisomes$ (2) $Golgi bodies$ (3) $Polysomes$ (4) $Endoplasmic reticulum$ 4. $Which of the following is an incorrect statement?$ (1) $Microbodies are present both in plant and animal cells.$ (2) $The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.$ (3) $Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.$ (4) $Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.$ 5. $Which of the following statements about inclusion bodies is incorrect?$ (1) $These are involved in ingestion of food particles.$ (2) $They lie free in the cytoplasm$ (3) $These represent reserve material in cytoplasm$ (4) $They are not bound by any membrane$ 6. $Given below are two statements: Statement-I: Mycoplasma can pass through less than 1 micron filter size. Statement-II: Mycoplasma are bacteria with cell wall. In the light of the above statements, choose the most appropriate answer from the options given below.$ (1) $Statement I is incorrect but Statement II is correct$ (2) $Both Statement I and Statement II are correct$ (3) $Both statement I and statement II are incorrect$ (4) $Statement I is correct but Statement II is incorrect$ 7. $Match List-I with List-II. List-I A. Cristae B. Thylakoids C. Centromere D. Cisternae List-II (i) Primary constriction in chromosome (ii) Disc-shaped sacs in Golgi apparatus (iii) In foldings in mitochondria (iv) Flattened membranous sacs in stroma of plastids Choose the correct answer from the options given below.$ (1) $A-(i), B-(iv), C-(iii), D-(ii)$ (2) $A-(iii), B-(iv), C-(i), D-(ii)$ (3) $A-(ii), B-(iii), C-(iv), D-(i)$ (4) $A-(iv), B-(iii), C-(ii), D-(i)$ 8. $When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:$ (1) $Telocentric$ (2) $Sub-metacentric$ (3) $Acrocentric$ (4) $Metacentric$ 9. $Match the following columns and select the correct option: Column-I A. Smooth Endoplasmic Reticulum B. Rough endoplasmic reticulum C. Golgi complex D. Centriole Column-I (i) Protein synthesis (ii) Lipid synthesis (iii) Glycosylation (iv) Spindle formation$ (1) $A-(iii), B-(i), C-(ii), D-(iv)$ (2) $A-(iv), B-(i), C-(ii), D-(iv)$ (3) $A-(i), B-(ii), C-(iii), D-(iv)$ (4) $A-(ii), B-(i), C-(iii), D-(iv)$ 10. $The concept of "Omnis cellula-e cellula" regarding cell division was first proposed by:$ (1) $Rudolf Virchow$ (2) $Theodor Schwann$ (3) $Schleiden$ (4) $Aristotle$ 11. $The organelles that are included in the endomembrane system are:$ (1) $Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles.$ (2) $Golgi complex, Mitochondria, Ribosomes and Lysosomes.$ (3) $Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes.$ (4) $Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes.$ 12. $Match List-I with List-II. List-I A. Metacentric chromosome B. Acrocentric chromosome C. Sub-metacentric D. Telocentric chromosome List-II (i) Centromere situated close to the end forming one extremely short and one very long arms (ii) Centromere at the terminal end (iii) Centromere in the middle forming two equal arms of chromosomes (iv) Centromere slightly away from the middle forming one shorter arm and one longer arm Choose the correct answer from the options given below.$ (1) $A-(i), B-(ii), C-(iii), D-(iv)$ (2) $A-(iii), B-(i), C-(iv), D-(ii)$ (3) $A-(i), B-(iii), C-(ii), D-(iv)$ (4) $A-(ii), B-(iii), C-(iv), D-(i)$ 13. $Which of the following statements regarding mitochondria is incorrect?$ (1) $Outer membrane is permeable to monomers of carbohydrates, fats and proteins.$ (2) $Enzymes of electron transport are embedded in outer membrane.$ (3) $Inner membrane is convoluted with infoldings.$ (4) $Mitochondrial matrix contains single circular DNA molecule and ribosomes$ 14. $Which structures perform the function of mitochondria in bacteria?$ (1) $Nucleoid$ (2) $Ribosomes$ (3) $Cell wall$ (4) $Mesosomes$ 15. $Ribosomal RNA is actively synthesized in$ (1) $Lysosomes$ (2) $Nucleolus$ (3) $Nucleoplasm$ (4) $Ribosomes$ 16. $Which of the following events does not occur in rough endoplasmic reticulum?$ (1) $Protein folding$ (2) $Protein glycosylation$ (3) $Cleavage of signal peptide$ (4) $Phospholipid synthesis$ 17. $The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as :$ (1) $Microtubules$ (2) $Microfilaments$ (3) $Intermediate filaments$ (4) $Lamins$ 18. $The size of Pleuropneumonia - like Organism (PPLO) is :$ (1) $0.02 μm$ (2) $1-2 μm$ (3) $10-20 μm$ (4) $0.1 μm$ 19. $Select the correct statement from the following regarding cell membrane :-$ (1) $Lipids are arranged in a bilayer with polar heads towards the inner part$ (2) $Fluid mosaic model of cell membrane was proposed by Singer and Nicolson$ (3) $Na+ and K+ ions move across cell membrane by passive transport$ (4) $Proteins make up 60 to 70% of the cell membrane$ 20. $In eubacteria, a cellular component that resembles eukaryotic cell is :-$ (1) $Plasma membrane$ (2) $Nucleus$ (3) $Ribosomes$ (4) $Cell wall$ 21. $Select the correct matching in the following pairs:$ (1) $Smooth ER Oxidation of phospholipids$ (2) $Smooth ER Synthesis of lipids$ (3) $Rough ER Synthesis of glycogen$ (4) $Rough ER Oxidation of fatty acid$ 22. $Water soluble pigments found in plant cell vacuoles are:$ (1) $Xanthophylls$ (2) $Chlorophylls$ (3) $Carotenoids$ (4) $Anthocyanins$ 23. $In eubacteria, a cellular component that resembles eukaryotic cells is$ (1) $Nucleus$ (2) $Ribosomes$ (3) $Cell wall$ (4) $Plasma membrane$ 24. $Which of the following statements regarding mitochondrial membrane is not correct?$ (1) $The outer membrane resembles a sieve$ (2) $The outer membrane is permeable to all kinds of molecules.$ (3) $The enzymes of the electron transfer chain are embedded in the outer membrane.$ (4) $The inner membrane is highly convoluted forming a series of infoldings.$ 25. $Given below are two statements : Statements-I : Membrane-bound organelles of the endomembrane system coordinate cellular functions. Statement-II : Mitochondria and chloroplasts are not considered a part of the endomembrane system. In the light of the above statements choose the most appropriate answer from the options given below :$ (1) $Statement-I is incorrect but Statement- II is correct$ (2) $Both Statement-I and Statement-II are correct$ (3) $Both Statement-I and Statement-II are incorrect$ (4) $Statement-I is correct but Statement-II is incorrect$ 26. $Which of the following statements with respect to Endoplasmic Reticulum is incorrect?$ (1) $SER is devoid of ribosomes$ (2) $In prokaryotes only RER are present$ (3) $SER are the sites for lipid synthesis$ (4) $RER has ribosomes attached to ER$ 27. $The plasma membrane consists mainly of :$ (1) $proteins embedded in a carbohydrate bilayer$ (2) $phospholipids embedded in a protein bilayer$ (3) $proteins embedded in a phospholipid bilayer$ (4) $proteins embedded in a polymer of glucose molecules$ 28. $Which one of the following cellular parts is correctly described?$ (1) $Ribosomes - those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S)$ (2) $Lysosomes-optimally active at a pH of about 8.5$ (3) $Thylakoids-flattened membranous sacs forming the grana of chloroplasts$ (4) $Centrioles - sites for active RNA synthesis$ 29. $The biosynthesis of ribosomal RNA occurs in :$ (1) $Ribosomes$ (2) $Golgi apparatus$ (3) $Microbodies$ (4) $Nucleolus$ 30. $Which one of the following cell organelles is enclosed by a single membrane?$ (1) $Mitochondria$ (2) $Chloroplasts$ (3) $Lysosomes$ (4) $Nuclei$