11th class (FSc) Biology Unit 2 MCQs
51. Which one of following is not a polysaccharide?
a. Pectin
b. Chitin
c. Dextrin
d. Cutin
52. Monsaccharide which are rare in nature and occur in some bacteria:
a. Pentoses
b. Trioses
c. Hexoses
d. Tetroses
53. Glycogen is found abundantly in:
a. Muscles
b. Liver
c. Both A & B
d. Kidney
54. Amylose starch is:
a. Branched and soluble in organic solvent
b. Unbranched and soluble in cold water
c. Unbrached and soluble in hot water
d. Branched and soluble in cold water
55. Our blood normally contains ……… glucose.
a. 0.06%
b. 0.6%
c. 0.08%
d. 0.8%
56. Glycosidic bond is a:
a. N-H linkage
b. C-N linkage
c. C-H linkage
d. C-O linkage
57. Cotton is the pure form of:
a. Waxes
b. Cellulose
c. Amino acid
d. Glycogen
58. The chief form of carbohydrates stored in animal body is:
a. Glucose
b. Starch
c. Glucose
d. Glycogen
59. Lactose is a:
a. Polysaccharide
b. Monosaccharide
c. Pectin
d. Oligosaccharides
60. Which one is the most common polysaccharide on earth:
a. Glycogen
b. Starch
c. Dextrin
d. Cellulose
61. Most of the monosaccharides form a ring structure when in:
a. Solvent
b. Water
c. Stomach
d. Solution
62. The covalent bond between two monsaccharides is called:
a. Hydrogen bond
b. Peptide bond
c. Disulphide bond
d. Glycosidic bond
63. Which is the most abundant carbohydrate in nature:
a. Pectin
b. Starch
c. Cellulose
d. Glycogen
64. The word carbohydrate literally means hydrated:
a. Oxygen
b. Water
c. Carbon
d. Nitrogen
65. Chemically, carbohydrates are defined as polyhdroxy:
a. Aldehydes
b. Ketones
c. Both a & b
d. None
66. The word saccharides is used for:
a. Proteins
b. Carbohdrates
c. Nucleic
d. Lipids
67. Cellulose of wood, cotton and paper, starches present in careats, root tubers, cane sugar and milk sugar are all examples of:
a. Proteins
b. Carbohydrates
c. Nucleic acids
d. Lipids
68. Some cabohydrates e.g.cellulose, are the main constituents of cell walls in plants and:
a. Mirco-organisms
b. Fungi
c. Yeasts
d. Algae
69. The main sources of energy in cell are simple carbohydrates e.g…
a. Fructose
b. Soucrose
c. Glucose
d. Galactose
70. All carbon atoms in a monsaccharide except one, have a:
a. Keto group
b. Hydroxyl group
c. Carboxyl group
d. Aldo group
71. The sugar with the keto group is called:
a. Aldo-sugar
b. Hydro-sugar
c. Both a & b
d. Keto sugar
72. In nature monosaccharides found are with carbon atoms:
a. 5 to 9
b. 2 to 6
c. 6 to 8
d. 3 to 7
73. In free state, glucose is present in all fruits, being being abundant in:
a. Date
b. Grapes
c. Figs
d. All a, b, c,
74. Glucose is yielded on complete hydrolysis of:
a. Date
b. Grapes
c. ,Figs
d. All a, b, c
75. On hydrolysis, sucrose (cane sugar) yield:
a. Glucose
b. Fructose
c. Both a & b
d. None
76. Glucose and fructose are:
a. Non-reducing sugars
b. Reducing sugars
c. Both a &b
d. None
77. Molecular formula of Sucrose (cane sugar) is
a. C22 H12 O11
b. C12 H22 O11
c. C11 H22 O10
d. C10 H20 O12
78. The most complex and most abundant carbohydrates in nature are:
a. Polysaccharides
b. Monosaccharides
c. disaccharides
d. Oligosaccharides
79. Starch, glycogen cellulose, dextrins, agar, pectin, and chitin are some biologically important:
a. Polysaccharides
b. Monosaccharides
c. Disaccharides
d. Oligosaccharides
80. Starch are of two types, amylose and:
a. Amyloagar
b. Amylodextrin
c. Amylopectin
d. Amylochitin
81. Starch which have unbranched chains of glucose and are soluble in hot water are:
a. Amyloagar
b. Amylose
c. Amylopectin
d. Amylchitin
82. Starches which have branched chains and are insoluble in hot or cold water are:
a. Amyloagar
b. Amylose
c. Amylopectin
d. Amylochtin
83. Starches give blue colour with:
a. Methylene blue
b. Chlorine
c. Crystal violet
d. Iodine
84. In water, glycogen is:
a. Suspended
b. Soluble
c. Insoluble
d. None
85. In the herbivores cellulose is digested because of micro-organism such as:
a. Protozoa
b. Bacteria
c. Yeasts
d. All, a, b, c
86. For digestion of cellulose, the micro-organisms present in herbivores secrete an enzyme called:
a. Degydrogenase
b. Cellulase
c. Herbivorase
d. Hydrogenase
87. Cellulose gives which colour with iodine:
a. Blue
b. Red
c. Violet
d. No
88. For the synthesis of 10g of glucose 717.6 Kcal of ………energy is used.
a. Mechanical
b. Chemical
c. solar
d. Potential
89. ……… is also called animal starch.
a. Glucose
b. Cellulose
c. Lactogen
d. Glycogen
90. In glycosidic linkage stability is provided to the complex carbohydrate molecules by:
a. Carbon-oxygen
b. Carbon-carbon
c. Carbon-nitrogen
d. Carbon-hydrogen
91. The covalent bond between two monosaccharide is called:
a. Hydrogen bond
b. Peptide bond
c. Ester bond
d. Glycosides bond
92. Cotton is a pure:
a. Cellulose
b. Polysaccharide
c. Cellulose
d. Both A & B
93. Trioses, tetroses, pentoess, hexose, heptoeses octoses are classes of:
a. Polysaccharides
b. Monosaccharides
c. Oligosaccharides
d. None
94. Most of the monsaccharides form a ring structure when in:
a. Solvent
b. Water
c. Stomach
d. Solution
95. On hydrolysis, oligosaccharides yield monsaccherides from:
a. Two to twenty
b. One to ten
c. Two to twenty
d. Two to ten
96. The most important polysaccharides which are stored in plant and animal cells, repectively, as reserve food material are:
a. Starch & glycogen
b. Starch & cellulose
c. Dextrins & lignin
d. Cellulose & glycogen
97. Polysaccharides act as storage molecules for the small carbohydrate units, like:
a. Fructose
b. Sucrose
c. Glucose
d. Galactose
98. Carbohydrates are organic compounds consisting of:
a. C, H & S
b. C, H & N
c. C, H, N & 0
d. C, H & O
99. Carbohydrates which are sweet in taste are:
a. Monsaccharides
b. Polysaccharides
c. Disaccharides
d. Oligosaccharides
100. Our blood normally contains glucose:
a. 0.06
b. 0.6%
c. 0.08%
d. 0.8%
101. Ribose will form a ring known as:
a. Furoribanose
b. Ribofuranose
c. Pyroglucanose
d. Glucopyranose
102. Glucose will form a ring known as:
a. Furoribanose
b. Ribofuranose
c. Pyroglucanose
d. Glucopyranose
103. The oligosaccharides yielding 2 monosaccharides are known as:
a. Trisaccharides
b. Bisaccharides
c. Tetrasaccharides
d. Disaccharides
104. Phosphatidyl chline is one of the common:
a. Glycolipid
b. Phospholipid
c. Terpenoid
d. Sphingolipid
105. The heterogeneous group of compounds related to fatty acids is called:
a. Glucose
b. Protein
c. Carbohydrates
d. Lipid
106. ……… is not a terpenoid:
a. Terpenes
b. Rubber
c. Waxes
d. Steroids
107. Fats oils have specific gravity of about:
a. 0.12
b. 0.8
c. 0.16
d. 0.10
108. Which one of the following is not a lipid:
a. Cutin
b. Rubber
c. Cholesterol
d. Chitin
109. The melting points of palmatic acid is:
a. 63.10C
b. -80C
c. 55.60C
d. 340C
110. Fats, oils, waxes, cholesterol, and related compounds are:
a. Lipids
b. Proteins
c. Nucleic acids
d. Carbohydrates
111. The lipids are a heterogeneous group of compounds are related to:
a. concentrared acids
b. amino acids
c. Fatty acids
d. Nuceic acids
112. Esters of fatty acids and alcohol are:
a. Sphingolipids
b. Acylglycerols
c. Terpenoids
d. Waxes
113. Fatty acids which contain no double bond are called:
a. saturated fatty acids
b. Straight fatty acids
c. Unsaturated fatty acids
d. Ringed fatty acids
114. Fatty acids which contain up to 6 double bonds are called:
a. Saturated fatty acids
b. Straight fatty acids
c. Unsaturated fatty acids
d. Ringed fatty acids
115. Solubility of fatty acids to organic solvent and their melting points increase with increasing number of:
a. Oxygen atoms
b. Carbon atoms
c. Nitrogen atoms
d. Hydrogen atoms
116. The melting point of palmitic acid is:
a. 27.90C
b. 13.50C
c. 36.70C
d. 63.10C
117. The melting point of butyric acid:
a. -50C
b. -80C
c. -40C
d. 80C
118. Fats containing unsaturated fatty acids are usually liquid at room temperature and are said to be
a. Oils
b. Waxes
c. Carotenes
d. Terpenes
119.Animal fats are solid at:
a. 300C
b. 100C
c. Room temperature
d. 200C
120. Most of the plant fats are liquid at:
a. 300C
b. 100C
c. Room temperature
d. 200C
121. Fats and oils have a specific gravity of about:
a. 0.12
b. 0.8
c. 0.16
d. 0.10
122. The mixtures of long chain alkanes and alcohol, ketones and esters of long chain fatty acids are:
a. Sphigolipids
b. Acylglycerols
c. Phospholipis
d. Waxes
123. Nitrogenous bases such as choline, ethanolamine and serine are important components of:
a. Phospholipids
b. Acylglycerols
c. Sphingolipids
d. Waxes
124. The isoprenoid unit by condensation gives rise to:
a. Steroids
b. Rubber
c. Carotenoids
d. All a, b, c,
125. Lipids are insoluble in:
a. Water
b. Alcohol
c. Benzene
d. Chloroform
126. Lipids are soluble in organic solvents such as:
a. Benzene
b. Alcohol
c. Chloroform
d. All a, b, c,
127. Acylglycerlos are composed of:
a. Glycerol & butyric acid
b. Glycerol & fatty acids
c. Glycerol & nucleic acids
d. Glycerol & amino acids
128. In animals the fatty acids are straight of chains, while in plants these may be:
a. Branched
b. Ringed
c. Both a & b
d. Unbranched
129. Phospholipids are derivatives of phosphatidic acid, which are composed of:
a. Phosphorous
b. Glycerol
c. Fatty acids
d. All a, b, c,
130. Terpenoids are made up of a simple repeating unit:
a. Terpene unit
b. Prenoid unit
c. Steroid unit
d. Isoprenoid unit
131. Lipids have been classified as acyl glycerols, waxes,phospholipids.
a. Carotenoids & cholorphyll
b. Carotenoids& steroids
c. Xanthophyll & phycobiling
d. Xanthophylls & phycobilin
132. The most widely spread acyl glycerol is triacy glycerol, also called:
a. Triglycerides
b. Neutral lipids
c. Both a & b
d. None
133. Waxes are widespread as protective coatings on:
a. Fruits
b. Leaves
c. Stems
d. Both a & b
134. Phoshatidylcholine is one of the common:
a. Glycolipids
b. Phospholipids
c. Terpenoids
d. Sphingolipids
135. Phosphatidyl choline is one of the common:
a. Glycolipid
b. Phospholipid
c. Terpenoid
d. Sphingolipid
136. Hemoglobin is a:
a. Globular proteins
b. Fibrous proteins
c. Double coiled protein
d. Coiled proteins
137. The molecule formed by two amino acids is called:
a. Peptide linkage
b. Dipeptide
c. Peptide bond
d. Both A&b
138. Amino acids are linked to each other by:
a. Hydrophobic bond
b. Ester bond
c. Peptide bond
d. Glycosidic bond
139. Keratin is an example of fibrous protein present in:
a. Muscles
b. Nails
c. Bones
d. Blood
140. Enzymes, antibodies, hormones and hemoglobin are example of:
a. Fibrous protein
b. Ovular proteins
c. Tough proteins
d. Globular protein
141. The amino acids are mainly different from each other due to the type and nature of:
a. Carboxyl group
b. R –group
c. Peptide bond
d. Amino group
142. Helical shape of a polypeptide is due to presence within molecule:
a. Disulphide bond
b. Covalent bond
c. Peptide bond
d. Hydrogen bond
143. Peptide bond is between:
a. C – H
b. C – N
c. C – O
d. N – H
144. Silk fiber, myosin, fibrin and keratin are examples of:
a. Oval proteins
b. Fibrous proteins
c. Globular proteins
d. Tough proteins
145. Keratin is an example of fibrous proteins present in:
a. Bone
b. Blood
c. Nail and hair
d. Muscle
146. The number of proteins in the human body is over:
a. 5,000
b. 1,000
c. 10,000
d. 2,000
147. The most abundant organic compounds to be found in cells are:
a. Carbohydrates
b. Proteins
c. Nucleic acids
d. Lipids
148. Over 50% of the total dry weight of the cells are:
a. Carbohydrates
b. Lipids
c. Nucleic acid
d. Protein
149. Proteins are polymers of:
a. Amino acids
b. Fatty acids
c. Nucleic acids
d. None
150. The No. of amino acids in different proteins varies from a few to:
a. 3000
b. Even none
c. Both a & b
d. 2000
151. Of 170 amino acids, the constituents of proteins are about:
a. 22
b. 15
c. 25
d. 20
152. All the amino acids have an amino group (-NH ) and a carboxyl group (-COOH) attached to the same carbon atom, also known as:
a. Gamma carbon
b. Alpha carbon
c. Sigma carbon
d. Beta carbon
153. Some proteins, called antibodies, defend the body against:
a. Air raiders
b. Predators
c. Land invaders
d. Pathogens
154. The proteins consisting of molecules having one of more polypeptide chains:
a. Ovular
b. Fibrous
c. Tough
d. Globular
155. Secondary structure is most important in:
a. Ovular proteins
b. Fibrous protein
c. Tough proteins
d. Globular proteins
156. The proteins which are spherical or ellipsoida due to multiple folding of polypeptide chains are:
a. Ovular
b. Fibrous
c. Tough
d. Globular
157. Amino acids are linked to each other by a:
a. Hydrophobic bond
b. Ester bond
c. Peptide bond
d. Glycosidic bond
158. The types of amino acids which have found to occur in cells and tissues are about:
a. 170
b. 17
c. 71
d. 107
159. Carbon combines with nitrogen in amino acid linkages to form:
a. Glycosidic bond
b. Peptide bonds
c. Ionic bonds
d. Ionic bonds
160. The attachment of two sub fibrous protein in:
a. K+
b. Ca+2
c. Fe2+
d. Mg+2
161. The sequence of amino acids in a protein molecule was determined by:
a. F. sanger
b. E. Chatton
c. J. Watson
d. F. Meiseher
162. Which type of bond is not formed in maintaining tertiary structure of proteins?
a. Disulfide
b. Lonic
c. Hydrophobic interactions
d. Hydrogen
163. In the a –helix protein structure, each turn of the helix has amino acids:
a. 5.6
b. 3.6
c. 6.6
d. 4.6
164. The alpha chain of haemoglobin has amino acids:
a. 141
b. 174
c. 146
d. 171
165. Helical shape of polypeptide is due to presence within molecule:
a. Disulphide bond
b. Covalent bond
c. Peptide bond
d. Hydrogen bond
166. In each turn of the helix, the -helix has:
a. 5.6 amino acids
b. 3.6 amino acids
c. 6.3 amino acids
d. 4.6 amino acids
167. By the folding back of the polypeptides the structure formed is:
a. Random coils
b. a- helix
c. B-pleated sheet
d. None
168. Usually a polypeptide chain of protein bends and folds upon itself, forming a globular shape called:
a. Tertiary structure
b. Primary structure
c. Quaternary structure
d. Secondary structure
169. The structure maintained by three types of bonds, namely ionic, hydrogen, and disulfide (-S-S-) is:
a. Tertiary structure
b. Primary structure
c. Quaternary structure
d. Secondary structure
170. In quaternary structure of proteins, the tertiary chain sare aggregated and held together by hydrophobic interactions, hydrogen and:
a. Ester bonds
b. Covalent bonds
c. Ionic bonds
d. Disulfide bonds
171. Haemoglobin, the oxygen carrying protein of red blood cells, is a:
a. Tertiary structure
b. Primary structure
c. Quaternary structure
d. Secondary structure
172. Tertiary structure is most important in:
a. Fibrous protein
b. Ovular proteins
c. Tough proteins
d. Globular proteins
173. Globular proteins are soluble are soluble in aqueous media such as:
a. Aqueous alcohol
b. Salt solution
c. Solution of acids or bases
d. All a, b, c
174. The protein structure composed of the number and sequence of amino acids in a protein molecule is:
a. Tertiary
b. Primary
c. Quaternary
d. Secondary
175. The first scientist who determined the sequence of amino acids in a protein molecule was:
a. James Watson
b. Nicholson
c. Franklins
d. F. Sanger
176. The two chains of insulin are held together by:
a. Disulphide bridges
b. Ionic bonds
c. Hydrophobic interaction
d. Covalent bonds
177. Haemoglobin is composed of four chains:
a. 2 gamma & 2 beta
b. 2 alpha & 2beta
c. 2 alpha & 2gamma
d. 2 alpha & 3beta
178. Insulin has 51 amino acids, which are arranged in two polypeptide chains
a. 21 & 30amino acids
b. 20 & 31amino acids
c. 25 & 26amino acids
d. 11 & 40amino acids
179. NAD is a:
a. Terpenoid
b. Trisaccheride
c. Dinucleotide
d. Purine
180. Most of cellular secretions are in nature:
a. Carbohydrates
b. Proteins
c. Glycoproteins
d. Lipids
181. Which is not conjugated molecule?
a. Polysaccharide
b. Glycoprotein
c. Lipoprotein
d. Glycolipid
182. The % age of RNA in a cell is:
a. 80%
b. 3-4%
c. 10-20%
d. 40-50%
183. The compound formed by combination of a nitrogen base and a pentose sugar is called:
a. Polypeptide
b. Nucleotide
c. Polysaccharide
d. Nucleoside
184. Necleohistones are present in:
a. Ribosomes
b. Nucleoli
c. Mitochondria
d. Chromosomes
185. 80 % of the total RNA in the cell comprises:
a. rRNA
b. mRNA
c. RNA-DNA hybrid
d. tRNA
186. The mRNA of the total cell RNA is about:
a. 2-4%
b. 3-4%
c. 3-5%
d. 1-2%
187. The percentage of ribosomal RNA in the cell is:
a. 50%
b. 4%
c. 80%
d. 20%
188. Conjugated histone proteins are:
a. Regulatory only
b. Structural and Regulatory
c. Transport proteins
d. Structural only
189. Hydrogen bonds between adenine and thymine are:
a. Five
b. Three
c. Two
d. Four
190. Chemical nature of most cellular secretions is:
a. Carbohydrates
b. Proteins
c. Glycoproteins
d. Lipids
191. The percentage by weight of RNA in a bacterial cell is:
a. 3%
b. 0.25%
c. 6%
d. 2%
192. Nucleic acids were first isolated in 1870 by Friedrich Miescher from the nuclei of:
a. Liver cells
b. Pus cells
c. Kidney cells
d. Blood cells
193. Deoxyribonucleic acids or DNA and ribonucleic acid or RNA are of two types of:
a. Amino acids
b. Fatty acids
c. Carboxylic acids
d. Nucleic acids
194. DNA occurs in chromosomes, in the nuclei of the cell sand in much lesser amount in:
a. Mitrochondria
b. Chloroplasts
c. Both a & b
d. chromoplast
195. RNA is present in the:
a. Cytosol
b. Nucleolus
c. Ribosomes
d. All a, b, c
196. Nucleotides acids are polymers of units called:
a. Nucleopeptides
b. Nucleotides
c. Nucleiods
d. Nucleosides
197. Each nucleotide is made of three subunits i) a 5-carbonmonosaccharide pentose sugar), a nitrogen containing base and:
a. Fatty acid
b. Nitrous acid
c. Amino acid
d. Phosphoric acid
198. Pentose sugar in ribonucleotide is:
a. Ribose
b. Ribulose
c. oxyribose
d. Deoxyribose
199. Pentose sugar in deoxyribonucleotide is:
a. Ribose
b. Ribulose
c. Deoxyribose
d. Oxyribose
200. Which one is not pyrimidine:
a. Uracil
b. Crytosine
c. Guanine
d. Thymine
201. Purines are adenine and:
a. Uracil
b. Cytosine
c. Guanine
d. Thymine
202. Phosphoric acid (H PO ) has the ability to develop ester linkage with OH group of:
a. Aldo sugar
b. Pentose sugar
c. Keto sugar
d. Hexose sugar
203. The compound formed by combination of a base and a pentose sugar is called:
a. Nucleoid
b. Nucleotide
c. Necleopeptide
d. Nucleoside
204. A nucleoside and a phosphoric acid combine to form a:
a. Nucleotide
b. Nucleoid
c. Nucleophosphide
d. Necleopeptide
205. An important nucleotide used as an energy currency by the cell is:
a. TTP
b. NAD
c. ATP
d. FAD
206. The nucleoside and phosphoric acid combine to form a:
a. Polypeptide chains
b. Polynucleotide chains
c. Peptide chains
d. Nucleotide chains
207. Two nucleotides join together to from:
a. Dinucleoside
b. trinucleotide
c. Dinucleoid
d. Dinucleotide
208. Nicotinamide adenine dinucleotide, abbreviated as NAD molecule was provided by:
a. Dinucleoside
b. Trinucleotide
c. Disnucleoid
d. Dinucleotide
209. In 1951 data about the ratios of different bases present in DNA molecule was provide by:
a. Erwin Chargaff
b. Ernst hackle
c. Wilkins & franklin
d. Watson& Crick
210. The technique of X-ray diffraction to determine the structure of DNA was used by:
a. Erwin Chargaff
b. Ernst hackle
c. Wilkins and Franklin
d. Watson & Crick
211. The scale model of DNA was built by:
a. Erwin chargaff
b. Ernst hackle
c. Wilkins and Franklin
d. Watson & crick
212. Two strands of DNA are coiled around each other in the form of:
a. a-helix
b. Double helix
c. Triple helix
d. Single helix
213. The two strands DNA are coiled around each other so that there are 10 base pair in each turn of about:
a. 34A
b. 3.4 A
c. 54A
d. 134A
214. RNA is a polymer of:
a. Oxyribonucleotides
b. Deoxyribonucleotides
c. Ribonucleotides
d. Nucleosides
215. The RNA molecules occur as:
a. Triple strand
b. Single strand
c. Quadruple strand
d. Double strand
216. The nitrogenous bases form the usual complementary pairing in RNA viz, cytocine with guanine and:
a. Urea with adenine
b. Thymine with adenine
c. Uracine with adenine
d. Uracil with adenine
217. RNA is synthesized by DNA in a process known as:
a. Transcription
b. Translation
c. Transformation
d. Reverse transcription
218. All the three types of RNAs are synthesized from DNA in the:
a. Cytoplasm
b. Mitochondria
c. Nucleus
d. Chloroplasts
219. mRNA takes the genetic message from the nucleus to the:
a. Glyoxisomes
b. Peroxisomes
c. Microsomes
d. Ribosomes
220. For a protein molecule of 1,000 amino acids, mRNA will have the length of:
a. 5,000 nucleotides
b. 3,000 nucleotides
c. 6,0000 nucleotides
d. 4,000 nucleotides
221. Of the total RNA in the cell mRNA is about:
a. 2-4%
b. 3-4%
c. 3-5%
d. 1-2%
222. Od the cellular RNA, tRNA comprises about:
a. 7 to 14%
b. 5 to 10%
c. 15 to 30%
d. 10 to 20%
223. Transfer RNA molecules have a chain length of:
a. 75- 90 nucleotides
b. 55-50 nucleotides
c. 60-90 nucleotides
d. 75-85 nucleotides
224. Amino acid molecules are transferred to the site where peptide chains are being synthesized by:
a. dRNA
b. mRNA
c. tRNA
d. rRNA
225. Of the total RNA, rRNA may be up to:
a. 60%
b. 80%
c. 50%
d. 70%
226. Carbohydrates may combine with protein to form:
a. Hydroprotein
b. Carboprotein
c. Protocarbohydrates
d. Glycoprotein
227. Carbohydrates may combine with lipids to form:
a. Glyclolipids
b. Carbolipids
c. Lipocarbohydrates
d. Hydrolipids
228. In nature, most of the cellular secretion are:
a. Nucleoprotein
b. Glycolipid
c. Glycoprotein
d. Lipoprotein
229. Both glycoprotein and glycolipids are integral structure components of:
a. Chromosome
b. Plasma membranes
c. Ribosomes
d. Cell walls
230. The nucleohistones are present in:
a. Nucleolus
b. Nucleus
c. glyoxysom
d. Chromosomes
231. The nucleostones play an important role in regulation of:
a. Gene expression
b. Nerve impulse
c. Gene replication
d. Assimilation
232. Sugar in each nucleotide of DNA is:
a. Deoxyribose
b. Ribose
c. Deoxyglucose
d. Glucose
233. DNA is generally located inside the nucleus, while RNA is concentrated in:
a. Peroxisomes
b. Mitochondria
c. Cytoplasm
d. Chloroplasts
234. Typically a nucleotide is composed of three components I.e., pentose sugar nitrogenous base, and:
a. Fatty acid
b. Amino acid
c. Acetic acid
d. Phosphoric acid
235. The two helices of DNA are held together by weak:
a. Hydrogen bonds
b. Nitrogen bonds
c. Carbon bonds
d. Oxygen bonds
236. The amount of DNA is fixed for a particular species, as it depends upon the number of:
a. Glyoxisomes
b. Ribosomes
c. Chromoshomes
d. Peroxisomes
237. The genetic information is passed on from one generation to another by heredity material which is:
a. NAD
b. DNA
c. ATP
d. PNA
238. Ribosomal RNAs along with protein constitute
a. Glyoxisomes
b. Peroxisomes
c. Microsomes
d. Ribosomes
239. DNA is made up of:
a. Ribonuncleotides
b. Deoxyribonucleotides
c. Nucleotides
d. Oxyribonucleotides
240. RNA is composed of:
a. Ribonucleotides
b. Deoyribonucleotides
c. Nucleotides
d. Oxribonucleotides
241. Hydrogen bonds between A and T are:
a. Three
b. Five
c. Two
d. Four
242. Hydrogen bonds between C and G are:
a. Three
b. Five
c. Tow
d. Three
243. As compared to somatic cells, the amount of DNA in germ line cells (sperms and ova) is almost:
a. Double
b. Half
c. One fourth
d. Equal
244. There are three types of RNA molecules viz:
a. cRNA, dRNA&tRNA
b. mRNA,nRNA &cRNA
c. mRNA,gRNA&tRNA
d. mRNA,rRNA &tRNA
Click here to directly on chapter no.3