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New. Dimension Institute, satyaveer sir, , 1. RNA and DNA are chiral molecules, their, chirality is.due to, (a) chiral’bases, (b) chiral’phosphate units, (c) D-sugar component, (@) L-sugar component, 2. Glucose does not react with, (a) NH,OH (5) Conc. HNO,, (c) (CH,CO),O (d) NaHSO,, 3. A basic amino acid among the following is, (a) glycine (b) valine, (c) histidine (d) leucine, , Page | of 5, , 4. Glucose on oxidation with Br,(aq) gives, (a) Gluconic acid.....(b), Tartaric acid, (c) Sachharic acid, (d) Meso-oxalic acid, , 5. Which ofthe following is non-reducing, sugar?, , (a) Glucose (b) Sucrose, (c) Fructose (d) Galactose, 6. Which of the following statements is not, correct? |, (a) Ovalbumin is a simple food reserve, egg white., , 9 friendspuram extension paschimpuri sikandfa agra, , ph. 9719511626

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New. Dimension Institute, satyaveer sir, , (6) Blood proteins thrombin and fibrinogen, are involved in blood clotting., (c) Denaturation makes the proteins more, active., (d) Insulin maintains sugar level in the blood, of a human body., 7. In aqueous solution, an amino acid cxist as, (a) cation, (6) anion, (c) zwitter ion, (d) neutral molecule, 8. Which of the following pairs represents, , , , , , , , , , , , , , , , , , , , , , , , , , , , anomers? [NCERT Exemplar Problems], (a) CHO CHO, Hon HO—}—H, HO——H HO——H, H——OH H—+—oH, H——OH H——OH, CH,OH CH,OH, (6) CHO CHO, H——OH HO——H, HO—- H——OH, H—1—OH HO—+-H, H——OH HO—\—H, CH,OH CH,OH, © yton HO-+—y, H——OH H——OH, HO-1_4 HO+-H 9, H—+—OoH H——OH, H. H, CH,OH CH,OH, “ H-—OH HO-—y, H+—OH HO-+—H, HOH 4 H——on §, H——OH HO-+—H, yi., H H, CH,OH CH,OH, , Page 2 of 5, , 9. Proteins are found to have two different, types of secondary structures viz. a-helix, and fi-pleated sheet structure. a-helix, structure of protein is stabilised by :, , [NCERT Exemplar Problems], (a) Peptide bonds, (6) van der Waals’ forces, (c) Hydrogen bonds, (d) Dipole-dipole interactions, 10. Dinucleotide is obtained by joining two, nucleotides together by phosphodiester, linkage. Between which carbon atoms of, pentose sugars of nucleotides are these, linkages present?, [NCERT Exemplar Problems], (a) 5’ and 3! (8) Land 5, (c) 5’ and 5’ (d) 3' and 3’, 11. Nucleic acids arethe polymers of, INCERT Exemplar Problems], (a) Nucleosides, (6) Nucleotides, (c) Bases (d) Sugars, 12. Each polypeptide in a protein has amino, acids linked with cach other in a specific, Sequence, This sequence of amino acids is, said to be a, [NCERT Exemplar Problems], (a) primary structure of proteins., (6) secondary structure of proteins., (c) tertiary structure of proteins., (d) quaternary structure of proteins., 13, Which of the following reactions of glucose, can be explained only by its cyclic structure?, [NCERT Exemplar Problems], (a) Glucose forms pentaacetate., , (b) Glucose reacts with hydroxylamine to, form an oxime., , (c) Pentaacetate of glucose does not react, with hydroxylamine,, , (d) Glucose is oxidised by nitric acid to, gluconic acid., , 9 friendspuram extension paschimpuri sikandfa agra, ph. 9719511626

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New. Dimension Institute, satyaveer sir, , 14. Amino acids are classified as acidic, basic, or neutral depending upon the relative, number of amino and carboxyl groups in, their molecule. Which of the following are, acidic?, , (1) (CH,),CH—CH—COOH, “he, a) WO0C—Cai-— CH= —COOH, NH,, (11l) H.N—CH,—CH,—CH,—COOH, qv) =e —COOH, NH,, (@) Land 11 (b) Hand I, , © landIv (d) I and IV, 15. Lysine, BCA —COOH is, NH., , 2, , (1) a-Amino acid, , (iI) Basic amino acid, (iI) Amino acid synthesised in body, (IV) B-Amino acid, , (a) Land II (6) Land Il, (c) MlandIV = (d)_ Land IV, , 16. a-D (+) glucose and B-D (+) —glucose are, (a) Enantiomers IKVS], (6) Geometrical isomers, (c) Anomers, (d) Epimers, , 17. DNA and RNA differ in {Kvs], (a) Sugar (b) Purines, , (c) Pyrimidines (d) Both (a) and (c), 18. Keratin present in hair is an example of, , (a) Fibrous protein |KVS|, , (6) Globular protein, , (¢) Conjugated protein, , (d) Derived Protein, , Page 3 of 5, , 19. Amino acids are, , (a),acidic (6) basic Pedi 20.5, (c) amphoteric (d) al}, 20, Thiol group is present . Of these, (a) cytosine (b) cystine, (c) cysteine (@) methionine, , 21. The change in optical rotatio, prepared solution of glucose in co, , (a) racemisation (5) specific Totation, (c) mutarotation (d) tautomerism, , 22. Which of the following statement is correc?, (a) All amino acids are optically active,, (b) All amino acids form zwitter ions,, , (c) All amino acids’except glutamic acid, are basic., , (d) All amino acids except lysine are acidic,, , 23. Glucose, when reduced with HI and red, phosphorus gives, , (a) n-hexane (5) n-heptane, (c) n-pentanc (d) n-octane, 24«,How many amino acids are present in, sequence of insulin?, (a) 21 (6) 51, (c) 20 (d) 52, 25. © S, NH N', NM SH,, COOH, x, The increasing acid strength is, (a) X>Z>¥Y (b) Z<X<¥Y, (c) X>Y>Z (d) Z>X>Y, , 26. Which of the following is correct about, H-bonding in DNA?, (a) A-T,G-C_ (by"ASG,T-G, (c) G-T,A-C (@_ASAT-T, 27. ADP and ATP differ'in number of, (a) phosphate units (6Y"Tibose units, (c) adenine.units, (¢) nitrogen atoms, , 9 friendspuram extension paschimpuri sikandfa agra, , ph. 9719511626

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New. Dimension Institute, satyaveer sir, , 28, The a- and B-glucose are, (a) isomers of D(+) glucose and L(-), glucose respectively., (b) diastereomers of glucose, (c) anomers of glucose, (d) isomers which differ in the configuration, of C-2,, 29. Which of the following proteins is globular?, (a) Collagen (b) Albumin, (c) Myosin (d) Fibroin, 30. Which of the following monosaccharides are, , present as five membered cyclic structure, (furanose structure)?, , ‘() Ribose (I) Glucose, (it) Fructose (TV) Galactose, (ay 1 and Ill {b) Wand IV, (c) WandIV = (ad) TandIV, 31. In fibrous proteins, ee chains are, held together by, , (I) van der Waals’ forces, (II) disulphide linkage, (II}) electrostatic forces of attraction, (TV) hydrogen bonds, (a) I and IT (5) Mand IV, (c) Ti and IV (ad) Land IV., 32. Fibrous proteins such as silk and fibtoin, consist of chain arrangement as a, (a) a-helix, (6) B-helix, (c) B-pleated structure, (d) 3-D arrangement, 33. In DNA the complementary bases are, (a) U:A,C:G, (byA:T,G:C, () A:T,G:U, (d) A:G,T:C, , Page 4 of 5, , 34, The segment of DNA which acts as, instrumental manual for synthesis of protein, is, (a) Deoxyribose (6) Nucleoside, (c) Nucleotide (d) Gene, , 35. Hemoglobin is protein with, (a) Primary structure, , (6) Secondary structure, (c) Tertiary structure, (d) Quarternary structure, , 36. Which of the following statement/s is/are, about denaturation of proteins?, , (A) It causes loss of secondary.and tertiary, structure., , (B) It leads to conversion,of double strand, DNA to single strand., , (C) It affects primary structure which gets, distorted but Sequence of amino acid, remains sames, , (a) A, B, © (6) Aand C, (c) Bony (d) Aand B, 37._Thé-pyrimidine bases in DNA are, (a), Cytosine and Adenine, (8) Cytosine and Guanine, (c) Cytosine and Thymine, (d@) Guanine and Uracil, 38. The secondary structure refers to, (a) sequence of amino acids, , (4) fixed configuration of polypeptide back, bone, , (c) disulphide linkages, (d) hydrophobic interaction, , 39, Biurete test is not given by, (a) Protein (b) Glucose, (c) Polypeptide (d) Urea, 40. Number of asymmetri¢ycatbon atoms in, glucose are, (a) 4 (b) 6, (e) 5 (d) 2, , 9 friendspuram extension paschimpuri sikandfa agra, , ph. 9719511626

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New. Dimension Institute, satyaveer sir, , 41. Due to presence of aldehyde group, glucose, reacts with, (a) NH,OH (b) HCN, (c) Fehling’s solution (d) All of these, , 42. The complementary base sequence of DNA, , strand. is, (a) S'CGAT3’ (6) S'ATGC-3', (ec) S'CGTA-3' (@) S'TACG3’, , 43. Pyrimidine present in RNA are, (a) Adenine and guanine, (6) Thymine and Uracil, (c) Uracil and cytosine, (@) Thymine and guanine, 44. Which*of the following is essential amino, , acid?, (a) Valine (4) Glycine, (c),Proline (d) Tyrosine, , 45. The helical structure of protein is stabilised, by, , (a) Dipeptide bond (6) H-bond, , (c) Glycosidic bond (d) Peptide bond, 46. Which of the following gives positive, , Fehling’s solution test?, , (a) Glucose (6) Fructose, (c) Galactose (d@) All of these, 47. Hemoglobin is a, (a) carbohydrate (6) globular protein, (c) fibrous protein (d) lipid, 48. D(+) glucose reacts with NH. ,0H and gives, oxime. The correct representation is, (a) CH=NOH, , , , H-+—OH, ibn, H-}+—OH, CH,OH, (6) CH—=NOH, H—— on, H—~—0H, HO —4—Hi, H——OH, CH,OH, , Page 5 of 5, , HO-—;-—H, HO—}+——H, CH,OH, 49. A peptide bond is, (a) Covalent (6) Planar, (c) sp*, partial double bond character, (d) All of these, Fructose reduces Tollen’s teagent and, Fehling’s solution due’to, (a) Chiral carbons, (b) Primary alcoholic group, (c) Secondary alcoholic group, (@) Enolisation followed by conversion to, aldehyde group by base, 51, .The'synthesis of daughter DNA from DNA, is called, (@) Translation (4) Replication, (c) Transcription (d) All of these, 52. RNA and DNA are chiral due to, (a) D-sugar component, (b) L-sugar component, (c) Chiral bases, (d) Alll of these, 53. The correct statement regarding RNA and, DNA respectively are, (a) RNA has 2'-Ribose and DNA has, 2'-deoxyribose, (6) RNA has 2!-deoxyribose and DNA, has 2'-ribose, (c) RNA has 2'-Arabinose and DNA has, 2'-deoxyribose, (d) None of these, , , , 3, , 9 friendspuram extension paschimpuri sikandfa agra, , ph. 9719511626