14. Which of the following treatment will convert starch directly into glucose?
(A) Heating with dilute $\ce{H2SO4}$
(B) Fermentation by diastase
(C) Fermentation by zymase
(D) Heating with dilute $\ce{NaOH}$
Multiple Choice
ID- 15000
15. The α-and β-forms of glucose are
(A) isomers of D(+) and L(–) glucose respectively
(B) diastereomers of glucose
(C) anomers of glucose
(D) isomers which differ in the configuration of C-2
Multiple Choice
ID- 15001
16. The general formula of carbohydrates is
(A) $\ce{C_nH2_n_+_1O}$
(B) $\ce{C_nH2_nO}$
(C) $\ce{C_x(H2O)_y}$
(D) $\ce{C_n(H2O)2_n}$
Multiple Choice
ID- 15002
17. What are the hydrolysis products of sucrose?
(A) Fructose + Fructose
(B) Glucose + Glucose
(C) Glucose + Galactose
(D) D-Glucose + Galactose
Multiple Choice
ID- 15003
18. Carbohydrates are stored in human body as the polysaccharide:
(A) starch
(B) glycogen
(C) cellulose
(D) amylose
Multiple Choice
ID- 15004
BSEB, 2018 (C)
19. In nucleic acids, the sequence is:
(A) base - phosphate - sugar
(B) base - sugar - phosphate
(C) sugar - base - phosphate
(D) phosphate - base - sugar
Multiple Choice
ID- 15005
20. The conversion of maltose into glucose is possible by the enzyme:
(A) zymase
(B) lactase
(C) maltase
(D) diastase
Multiple Choice
ID- 15112
21. Which of the following is a non-reducing sugar?
(A) Glucose
(B) Sucrose
(C) Maltose
(D) Lactose
Multiple Choice
ID- 15113
22. In cellulose, D-glucose units are joined by:
(A) α-1, 4 glycosidic linkage
(B) β-1, 6 glycosidic linkage
(C) β-1, 4 glycosidic linkage
(D) peptide linkage
Multiple Choice
ID- 15114
23. The anomeric carbon in D(+) glucose is
(A) C-1 carbon
(B) C-2 carbon
(C) C-5 carbon
(D) C-6 carbon
Multiple Choice
ID- 15115
24. Glucose$\ce{->[Br2 water]}$ Product is:
(A) hexanoic acid
(B) gluconic acid
(C) saccharic acid
(D) bromohexane
Multiple Choice
ID- 15116
25. How many C-atoms are there in a pyranose ring?
(A) 3
(B) 5
(C) 6
(D) 7
Multiple Choice
ID- 15117
26. Cellulose is a
(A) hexapolysaccharide
(B) pentapolysaccharide
(C) tripolysaccharide
(D) None of these
Multiple Choice
ID- 15118
27. Which is not a reducing sugar?
(A) Glucose
(B) Fructose
(C) Mannose
(D) Sucrose
Multiple Choice
ID- 15119
28. The letter 'D' in carbohydrates signifies
(A) dextrorotatory
(B) configuration
(C) diamagnetic nature
(D) made of synthesis
Multiple Choice
ID- 15120
29. A diabetic person carries a packet of glucose with him always, because
(A) glucose increases the blood sugar level slowly
(B) glucose reduces the blood sugar level
(C) glucose increases the blood sugar level almost instantaneously
(D) glucose reduces the blood sugar level slowly
Multiple Choice
ID- 15121
30. Among the naturally occurring carbohydrates, furanose ring is found in the
(A) glucose unit of cane sugar
(B) glucose unit of cellulose
(C) fructose unit of cane sugar
(D) galactose unit of lactose
Multiple Choice
ID- 15122
31. Amino acids generally exist in the form of Zwitter ions. This means they contain
(A) basic —$\ce{NH2}$ group and acidic —$\ce{COOH}$ group
(B) the basic —$\ce{NH3}$ group and acidic —$\ce{COO^–}$ group
(C) basic —$\ce{NH2}$ and acidic —$\ce{H^+}$ group
(D) basic —$\ce{COO^–}$ group and acidic —$\ce{NH3}$ group
Multiple Choice
ID- 15123
32. Globular proteins are present in
(A) blood
(B) eggs
(C) milk
(D) all of these
Multiple Choice
ID- 15124
33. Which one of the amino acids can be synthesised in the body?
(A) Alanine
(B) Lysine
(C) Valine
(D) Histidine
Multiple Choice
ID- 15125
BSEB, 2019 (A)
34. Formula of sucrose is:
(A) $\ce{C12H22O12}$
(B) $\ce{C12H22O11}$
(C) $\ce{C12H24O11}$
(D) $\ce{C12H22O10}$
Multiple Choice
ID- 15126
35. Denaturation of protein leads to loss of its biological activity by:
(A) formation of amino acids
(B) loss of primary structure
(C) loss of both primary and secondary structure
(D) loss of both secondary and tertiary structure
Multiple Choice
ID- 15127
BSEB, 2019 (A)
36. Carbohydrate which yield three three to ten mono saccharide units on hydrolysis is called:
(A) Monosaccharide
(B) Disaccharide
(C) Oligosaccharide
(D) Polysaccharide
Multiple Choice
ID- 15128
37. Protein are condensation polymers of:
(A) α-amino acids
(B) β-amino acids
(C) α-hydroxy acids
(D) β-hydroxy acids
Multiple Choice
ID- 15129
38. In fabrious proteins, polypeptide chains are held together by
(A) van der waals forces
(B) electrostatic forces of attraction
(C) hydrogen bonds
(D) covalent bonds
Multiple Choice
ID- 15130
BSEB, 2021 (A)
39. Vitamin A is known as:
(A) Ascorbic acid
(B) Retinol
(C) Calciferol
(D) Tocopherol
Multiple Choice
ID- 15131
40. Secondary structure of protein refers to:
(A) sequence of amino acids in polypeptide chain
(B) bonda between alternate polypeptide chains
(C) folding patterns of polypeptide chain
(D) bonding between $\ce{NH\overset{+}{3}}$ and $\ce{COO^–}$ of two peptides
Multiple Choice
ID- 15132
BSEB, 2017 (A), 2021 (A)
41. What is an enzyme?
(A) Carbohydrate
(B) Lipid
(C) Protein
(D) none of these
Multiple Choice
ID- 15133
42. Which of the following is an acidic amino acid?
(A) Glycine
(B) Valine
(C) Leucine
(D) Glutamic acid
Multiple Choice
ID- 15136
BSEB, 2021 (A)
43. In reaction $\ce{OHCH2 – }$$\ce{(CHOH)4 – CHO ->[HI, ∆]}$ .......... , product is:
(A) Fructose
(B) n-hexane
(C) Gluconic acid
(D) None of these
Multiple Choice
ID- 15137
BSEB, 2021 (A)
44. The human body does not produce:
(A) Enzyme
(B) DNA
(C) Vitamin
(D) Hormones
Multiple Choice
ID- 15138
45. Helical structure of protein is stabilised by
(A) peptide bond
(B) hydrogen bond
(C) van der Waals force
(D) dipole association
Multiple Choice
ID- 15139
46. Which one of the following sets of monosaccharides forms sucrose?
(A) α-D-galactopyranose and α-D-glucopyranose
(B) α-D-glucopyranose and β-D-fructofuranose
(C) β-D-glucopyranose and α-D-fructofuranose
(D) α-D-glucopyranose and β-D-fructopyranose
Multiple Choice
ID- 15140
47. Keratin, a structural protein is present in:
(A) hair
(B) wool
(C) silk
(D) all of these
Multiple Choice
ID- 15141
48. Which of the following is basic amino acid?
(A) Lysine
(B) Proline
(C) Alanine
(D) Aspartic acid
Multiple Choice
ID- 15142
49. The α-amino acid which contains the aromatic side chain is:
(A) proline
(B) tyrosine
(C) valine
(D) serine
Multiple Choice
ID- 15143
50. The number of amino found in proteins that a human body can synthesise is:
(A) 20
(B) 25
(C) 10
(D) 100
Multiple Choice
ID- 15144
51. Which of the following diseases is caused by deficiency of an enzyme?
(A) Phenylketonuria
(B) Cheilosis
(C) Scurvy
(D) Xerophthalmia
Multiple Choice
ID- 15145
BSEB, 2017 (A)
52. Enzymes are made up of:
(A) edible proteins
(B) proteins with specific structure
(C) nitrogen containing carbohydrates
(D) carbohydrates
Multiple Choice
ID- 15146
53. Vitamin A is present in:
(A) fish liver oil
(B) milk
(C) butter
(D) all of these
Multiple Choice
ID- 15147
54. Which of the following vitamins is water soluble?
(A) Vitamin E
(B) Vitamin D
(C) Riboflavin
(D) Retinol
Multiple Choice
ID- 15148
55. Which is a fat soluble vitamin?
(A) Vitamin A
(B) Vitamin $\ce{B6}$
(C) Vitamin C
(D) Vitamin $\ce{B2}$
Multiple Choice
ID- 15149
56. Which of the following disease is not correctly matched with the vitamins mentioned with it?
(A) Vitamin $\ce{B2}$–Cracking of lips
(B) Vitamin C–Bone deformities
(C) Vitamin D–Osteomalacia
(D) Vitamin A–Night blindness
Multiple Choice
ID- 15150
57. Vegetable oils like wheat germ oil, sunflower oil, etc etc are the good source of:
(A) Vitamin K
(B) Vitamin E
(C) Vitamin D
(D) Vitamin A
Multiple Choice
ID- 15151
58. Deficiency of vitamin E causes:
(A) rickets
(B) scurvy
(C) muscular weakness
(D) beri beri
Multiple Choice
ID- 15152
59. Bases common to RNA and DNa are
(A) adenine, guanine, cytosine
(B) adenine, uracil, cytosine
(C) adenine, guanine, thymine
(D) guanine, uracil, thymine
Multiple Choice
ID- 15153
60. In DNA, the complimentary beses are:
(A) uracil and adenine, cytosine and guanine
(B) adenine and thymine, guanine and cytosine
(C) adenine and thymine, guanine and uracil
(D) adenine and guanine, thymine and cytosine
Multiple Choice
ID- 15154
61. Thymine is:
(A) 5-methyluracil
(B) 4-methyluracil
(C) 3-methyluracil
(D) 1-methyluracil
Multiple Choice
ID- 15155
62. Which one of the following bases is not present in DNA?
(A) Thymine
(B) Uracil
(C) Adenine
(D) Cytosine
Multiple Choice
ID- 15156
63. Hereditary characteristic are passed on from parents to children through:
(A) gametes
(B) genes
(C) mutants
(D) enzymes
Multiple Choice
ID- 15157
64. A unit in nucleic acid which contains 'base-sugar phosphate' units is called:
(A) nucleotide
(B) nucleoside
(C) phosphotide
(D) polypeptide
Multiple Choice
ID- 15158
65. RNA is a:
(A) single helix strand
(B) double helix strand
(C) right hand twisted double helix strand
(D) triple helix strand
Multiple Choice
ID- 15159
66. A nucleoside un hydrolysis gives:
(A) an aldopentose and a nitrogenous base
(B) an aldopentose and phosphoric acid
(C) an aldopentose a nitrogenous base and phosphoric acid
(D) a nitrogenous base and phosphoric acid
Multiple Choice
ID- 15160
67. Nucleic acids are:
(A) small molecules
(B) dipeptides
(C) long chain polymers of nucleotides
(D) polypeptides
Multiple Choice
ID- 15161
68. Guanine is an example of:
(A) a nitrogenous base
(B) a nucleoside
(C) a nucleotide
(D) phosphate
Multiple Choice
ID- 15162
69. The double stand helix structure of DNA was proposed by:
(A) Har Gobind Khurana
(B) Watson and Crick
(C) A. R. Todd
(D) G. W. Kenner
Multiple Choice
ID- 15163
70. Which of the following is not produced by human body?
(A) Enzymes
(B) Vitamins
(C) Proteins
(D) Nucleic acid
Multiple Choice
ID- 15164
71. The two main differences between RNA and DNA are:
(A) ribose sugar and thymine in RNA
(B) deoxyribose sugar and uracil in DNA
(C) ribose sugar and uracil in RNA
(D) deoxyribose sugar and guanine in DNA
Multiple Choice
ID- 15165
BSEB, 2021 (A)
72. Ascorbic acid is a:
(A) Vitamin
(B) Enzyme
(C) Protein
(D) Amino acid
Multiple Choice
ID- 15166
73. Which of the following polymers is stored in the liver of animals?
(A) Amylose
(B) Cellulose
(C) Amylopectin
(D) Glycogen
Multiple Choice
ID- 15167
BSEB, 2021 (A)
74. Which of the following is artificial sweetening agent?
(A) Saccharin
(B) Aspertame
(C) Sodium cyclomate
(D) All of these
Multiple Choice
ID- 15168
75. Proteins are found to have two different type of secondary structures viz. α-helix and β-pleanted sheet. α-helix structure of protein is stabilised by:
(A) peptide bonds
(B) van der Waals forces
(C) hydrogen bonds
(D) dipole-dipole interactions
Multiple Choice
ID- 15169
76. Which of the following acids is a vitamin?
(A) Aspartic acid
(B) Ascorbic acid
(C) Adipic acid
(D) Saccharic acid
Multiple Choice
ID- 15170
77. Dinucleotide is obtained by joining two nucleotide together by phosphodiester linkage. Between which carbon atoms of pentose sugars of nucleotides are there linkages present?
(A) 5' and 3'
(B) 1' and 5'
(C) 5' and 5'
(D) 3' and 3'
Multiple Choice
ID- 15171
78. Nucleic acids are the polymers of ..........
(A) nucleosides
(B) nucleotides
(C) bases
(D) sugars
Multiple Choice
ID- 15172
79. Which of the following statements is not true about glucose?
(A) It is an aldohexose
(B) On heating wih $\ce{HI}$ it forms n-hexane
(C) It is present in furanose form
(D) It does not give 2,4-DNP test
Multiple Choice
ID- 15173
80. Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be ..........
(A) primary structure of proteins
(B) secondary structure of proteins
(C) tertiary structure of proteins
(D) quaternary structure of proteins
Multiple Choice
ID- 15174
81. DNA and RNA contains four bases each. Which of the following bases is not present in RNA?
(A) Adenine
(B) Uracil
(C) Thymine
(D) Cytosine
Multiple Choice
ID- 15175
82. Which of the following B-group vitamins can be stored in our body?
(A) Vitamin $\ce{B1}$
(B) Vitamin $\ce{B2}$
(C) Vitamin $\ce{B6}$
(D) Vitamin $\ce{B12}$
Multiple Choice
ID- 15176
83. Which of the following bases is not present in DNA?
(A) Adenine
(B) Thymine
(C) Cytosine
(D) Uracil
Multiple Choice
ID- 15177
BSEB, 2017 (C)
84. Which of the following is mono-saccharide?
(A) Sucrose
(B) Maltose
(C) Lactose
(D) Fructose
Multiple Choice
ID- 15178
BSEB, 2017 (A)
85. Sweetest of all sugars is
(A) Glucose
(B) Lactose
(C) Sucrose
(D) Fructose
Multiple Choice
ID- 15179
BSEB, 2016 (C)
86. Glucose is:
(A) Triose
(B) Tetrose
(C) Fentose
(D) Hexose
Multiple Choice
ID- 15180
BSEB, 2016 (C), 2017 (C)
87. Which vitamin deficiency causes night blindness?