NCERT CLASS 11 | TOPIC : CELL AND CELL THEORY | PYQB | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : CELL AND CELL THEORY | PYQB | NEET BIOLOGY ONLINE TEST

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It contains 45 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : kalvisolai.net

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1 ➤ 1. Identify the components labelled A, B, C and D in the diagram below from the list (i) to (vii) given along with: [AIPMT MAINS 2010]

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(i) Cristae of mitochondria

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(ii) Inner membrane of mitochondria

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(iii) Cytoplasm

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(iv) Smooth endoplasmic reticulum

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(v) Rough endoplasmic reticulum

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(vi) Mitochondrial matrix

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(vii) Cell vacuole

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(viii) Nucleus

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The correct components are:

(a) (A)-(v) (B)-(iv) (C)-(viii) (D)-(iii) (b) (A)-(i) (B)-(iv) (C)-(viii) (D)-(vi) (c) (A)-(vi) (B)-(v) (C)-(iv) (D)-(vii) (d) (A)-(v) (B)-(i) (C)-(iii) (D)-(ii)

2 ➤ 2. Membrane-bound organelles are absent in [AIPMT PRE 2010]

(a) Saccharomyces (b) Streptococcus (c) Chlamydomonas (d) Plasmodium

3 ➤ 3. Which one of the following has its own DNA? [AIPMT PRE 2010]

(a) Mitochondria (b) Dictyosome (c) Lysosome (d) Peroxisome

4 ➤ 4. The main arena of various types of activities of a cell is [AIPMT PRE 2010]

(a) Plasma membrane (b) Mitochondrion (c) Cytoplasm (d) Nucleus

5 ➤ 5. The plasma membrane consists mainly of [AIPMT PRE 2010]

(a) Phospholipids embedded in a protein bilayer. (b) Proteins embedded in a phospholipid bilayer. (c) Proteins embedded in a polymer of glucose molecules. (d) Proteins embedded in a carbohydrate bilayer.

6 ➤ 6. The figure below shows the structure of a mitochondrion with its four parts labelled as A, B, C and D. Identify the parts:

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[AIPMT MAINS 2011]

(a) D (outer membrane) – gives rise to inner membrane by splitting (b) B (inner membrane) – forms infolding called cristae (c) C (crista) – possesses single circular DNA molecule and ribosomes (d) A (matrix) – major site for respiratory chain enzymes

7 ➤ 7. In mitochondria, protons accumulate in the [AIPMT MAINS 2011]

(a) Outer membrane (b) Inner membrane (c) Intermembrane space ( d) Matrix

8 ➤ 8. Which one of the following is not considered as a part of the endomembrane system? [AIPMT MAINS 2011]

(a) Golgi complex (b) Peroxisome (c) Vacuole (d) Lysosome

9 ➤ 9. Which one of the following organisms is not an example of eukaryotic cells? [AIPMT PRE 2011]

(a) Escherichia coli (b) Euglena viridis (c) Amoeba proteus (d) Paramecium caudatum

10 ➤ 10. The important site for the formation of glycoproteins and glycolipids is [AIPMT PRE 2011]

(a) Golgi apparatus (b) Plastid (c) Lysosome (d) Vacuole

11 ➤ 11. In eubacteria, a cellular component that resembles eukaryotic cells is [AIPMT PRE 2011]

(a) Nucleus (b) Ribosomes (c) Cell wall (d) Plasma membrane

12 ➤ 12. Peptide synthesis inside a cell takes place in [AIPMT PRE 2011]

(a) Mitochondria (b) Chromoplast (c) Ribosomes (d) Chloroplast

13 ➤ 13. Which one of the following cellular parts is correctly described? [AIPMT MAINS 2012]

(a) Centrioles − Sites for active RNA synthesis (b) Ribosomes − Those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S) (c) Lysosomes − Optimally active at a pH of about 8.5 (d) Thylakoids − Flattened membranous sacs forming the grana of chloroplasts

14 ➤ 14. Which one of the following structures is an organelle within an organelle? [AIPMT MAINS 2012]

(a) Peroxisome (b) ER (c) Mesosome (d) Ribosome

15 ➤ 15. Ribosomal RNA is actively synthesized in [AIPMT PRE 2012]

(a) Lysosomes (b) Nucleolus (c) Nucleoplasm (d) Ribosomes

16 ➤ 16. What is true about ribosomes? [AIPMT PRE 2012]

(a) The prokaryotic ribosomes are 80S, where ‘S’ stands for sedimentation coefficient. (b) These are composed of ribonucleic acid and proteins. (c) These are found only in eurkaryotic cells. (d) These are self-splicing introns of some RNAs.

17 ➤ 17. Nuclear membrane is absent in [AIPMT PRE 2012]

(a) Penicillium (b) Agaricus (c) Volvox (d) Nostoc

18 ➤ 18. Select the correct statement from the following regarding cell membrane. [AIPMT PRE 2012]

(a) NA+ and K+ ions move across cell membrane by passive transport. (b) Proteins make up 60 to 70 per cent of the cell membrane. (c) Lipids are arranged in a bilayer with polar heads towards the inner part. (d) Fluid mosaic model of cell membrane was proposed by Singer and Nicolson.

19 ➤ 19. A major site for synthesis of lipids is [AIPMT 2013]

(a) RER (b) SER (c) Symplast (d) Nucleoplasm

20 ➤ 20. The Golgi complex plays a major role [AIPMT 2013]

(a) In trapping the light and transforming it into chemical energy. (b) In digesting proteins and carbohydrates. (c) As energy transferring organelles. (d) In post translational modification of proteins and glycosidation of lipids.

21 ➤ 21. Which one of the following organelle in the figure correctly matches with its function? [AIPMT 2013]

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(a) Rough endoplasmic reticulum, formation of glycoproteins (b) Golgi apparatus, protein synthesis (c) Golgi apparatus, formation of glycolipids (d) Rough endoplasmic reticulum, protein synthesis

22 ➤ 22. Which structures perform the function of mitochondria in bacteria? [AIPMT 2014]

(a) Nucleoid (b) Ribosomes (c) Cell wall (d) Mesosomes

23 ➤ 23. The solid linear cytosketetal elements having a diameter of 6 nm and made up of a single type of monomer are known as [AIPMT 2014]

(a) Microtubules (b) Microfilaments (c) Intermediate filaments (d) Lamins

24 ➤ 24. Match the following and select the correct answer: [AIPMT 2014]

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(A) Centriole - (1) Infoldings in mitochondria

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(B) Chlorophyll - (2) Thylakoids

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(C) Cristae - (3) Nucleic acids

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(D) Ribozymes - (4) Basal body cilia or flagella

(a) A : 4, B : 2, C : 1, D : 3 (b) A : 1, B : 2, C : 4, D : 3 (c) A : 1, B : 3, C : 2, D : 4 (d) A : 4, B : 3, C : 1, D : 2

25 ➤ 25. The motile bacteria are able to move by [AIPMT 2014]

(a) Fimbriae (b) Flagella (c) Cilia (d) Pili

26 ➤ 26. The chromosomes in which the centromere is situated close to one end are [AIPMT 2015]

(a) Metacentric (b) Acrocentric (c) Telocentric (d) Sub-metacentric

27 ➤ 27. Nuclear envelope is a derivative of

(a) Smooth endoplasmic reticulum (b) Membrane of Golgi complex (c) Microtubules (d) Rough endoplasmic reticulum

28 ➤ 28. The structures that are formed by the stacking of organized flattened membranous sacs in the chloroplast are [AIPMT 2015]

(a) Cristae (b) Grana (c) Stroma lamellae (d) Stroma

29 ➤ 29. Select the correct matching in the following pairs: [AIPMT 2015]

(a) Smooth ER Oxidation of phospholipids (b) Smooth ER Synthesis of lipids (c) Rough ER Synthesis of glycogen (d) Rough ER Oxidation of fatty acid

30 ➤ 30. True nucleus is absent in [AIPMT 2015]

(a) Anabaena (b) Mucor (c) Vaucheria (d) Volvox

31 ➤ 31. Which one of the following is not an inclusion body found in prokaryotes? [AIPMT 2015]

(a) Phosphate granule (b) Cyanophycean granule (c) Glycogen granule (d) Polysome

32 ➤ 32. DNA is not present in

(a) Chloroplast (b) Ribosomes (c) Nucleus (d) Mitochondria

33 ➤ 33. Which of the following are not membrane-bound? [RE-AIPMT 2015]

(a) Ribosomes (b) Lysosomes (c) Mesosomes (d) Vacuoles

34 ➤ 34. Which of the following structures is not found in a prokaryotic cell? [RE-AIPMT 2015]

(a) Ribosome (b) Mesosome (c) Plasma membrane (d) Nuclear envelope

35 ➤ 35. The structures that help some bacteria to attach to rocks and/or host tissues are [RE-AIPMT 2015]

(a) Fimbriae (b) Mesosomes (c) Holdfast (d) Rhizoids

36 ➤ 36. Match the columns and identify the correct option. [RE-AIPMT 2015]

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(a) Thylakoids - (i) Disc-shaped sacs in Golgi apparatus

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(b) Cristae - (ii) Condensed structure of DNA

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(c) Cisternae - (iii) Flat membranous sacs in stroma

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(d) Chromatic - (iv) Infoldings in mitochondria

(a) (iii) (iv) (i) (ii) (b) (iii) (i) (iv) (ii) (c) (iii) (iv) (ii) (i) (d) (iv) (iii) (i) (ii)

37 ➤ 37. Cellular organelles with membranes are [RE-AIPMT 2015]

(a) Chromosomes, ribosomes and endoplasmic reticulum (b) Endoplasmic reticulum, ribosomes and nuclei (c) Lysosomes, golgi apparatus and mitochondria (d) Nuclei, ribosomes and mitochondria

38 ➤ 38. Mitochondria and chloroplast are: [NEET - I, 2016] (i) Semi-autonomous organelles. (ii) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery. Which one of the following options is correct?

(a) Both (i) and (ii) are correct (b) (ii) is true and (i) is false (c) (i) is true and (ii) is false (d) Both (i) and (ii) are false

39 ➤ 39. Microtubules are the constituents of: [NEET - I, 2016]

(a) Cilia, Flagella and Peroxisomes (b) Spindle fibres, Centrioles and Cilia (c) Centrioles, Spindle fibres and Chromatin (d) Centrosome, Nucleosome and Centrioles

40 ➤ 40. A complex of ribosome attached to a single strand of RNA is known as: [NEET - I, 2016]

(a) Polysome (b) Polymer (c) Polypeptide (d) Okazaki fragment

41 ➤ 41. Which one of the following cell organelles is enclosed by a single membrane? [NEET - I, 2016]

(a) Mitochondria (b) Chloroplasts (c) Lysosomes (d) Nuclei

42 ➤ 42. Water soluble pigments found in plant cell vacuoles are: [NEET - I, 2016]

(a) Xanthophylls (b) Chlorophylls (c) Carotenoids (d) Anthocyanins

43 ➤ 43. Select the mismatch [NEET - II, 2016]

(a) Large central vacuoles – Animal cells (b) Protists-Eukaryotes (c) Methanogens-Prokaryotes (d) Gas vacuoles-Green bacteria

44 ➤ 44. Select he wrong statement. [NEET - II, 2016]

(a) Pili and fimbriae are mainly involved in monthly of bacteria cells (b) Cyanobacteria lack flagellated cells (c) Mycoplasma is a wall-less microorganism (d) Bacterial cell wall is made up of peptidoglycan

45 ➤ 45. A cell organelle containing hydrolytic enzymes is [NEET - II, 2016]

(a) Microsome (b) Ribosome (c) Mesosome (d) Lysosome

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