MCQ BIOLOGY (BIOMOLECULES 2)
MCQ BIOMOLECULES
101. Which of the following forms a part coenzymes?
A) Zn++
B) Lipase
C) Vitamin B1
D) Lysine
102. Which of the following linked in long chain to form protein?
A) purines
B) Amino acid
C) pyrimidines
D) Sugar
103. Sugars are characterized by having which two functional groups:
A) Carbonyl and hydroxyl
B) Carbonyl and methyl
C) hydroxyl and amino
D) hydroxyl and phosphate.
104. Cholesterol is an:
A) Di glyceride
B)saturated fat
C) unsaturated fat
D) steroid
105. The structure of protein can be denatured by:
A) The polar bonds of water
B) heat
C) The presence of Oxygen gas
D) the presence of CO2 gas.
106. a 1-4linkage is found in:
A) Strach
B) Cellulose
C) peptidoglycan
D) steroid
107. Ina spontaneous reaction, the free energy of a system:
A) Decreases
B) increases
C) becomes equal zero
D) remain unchanged
108. A molecule that adds hydrogen ions to a solution is known as:
A) a buffer
B) a base .
C) an acid
D) a hydrophobic substance
109. The most common monomer of carbohydrate is a molecule of
A) amino acid
B) phospholipid
C) maltose
D) glucose
110. In sugar cane and sugar beet, the storage product is:
A) Maltose
B) sucrose
C) Lactose
D) Isomaltose
111. One molecule of glucose and molecule of Galactose from:
A) Maltose
B) sucrose
C) Lactose
D) Dextrin
112. Linolenic acids have bonds:
A) One
B) two
C) three
D) fore
113. A phospholipid lecithin contains:
A) A fatty acid, an alcohol, a phosphate group and choline
B) A fatty acid an alcohol
C) A fatty acid an alcohol a phosphate group
D) A fatty acid, an alcohol and a phosphate group.
114. The part DNA of that varies among DNA molecules is its:
A) glycerol attachment
B) nitrogenous bases
C)sugar
D) phosphate
115. Which of the following ratio is constant in the DNA of All the species?
A) A + T/C+G
B) A + C/T + G
C) A + U/C + G .
D) A + G/C + T
116. DNA and RNA differ of:
A) Sugar only
B) Sugar and purines
C) Sugar and pyrimidines
D) Sugar and phosphate
117. Which of the following bases is found only in the RNA and not in DNA ?
A) Adenine
B) Uracil
C) Guanine
D) Thymine
118. Nucleic acids were discovered by :
A) Watson
B) Meischer
C) Crick
D) Beadle.
119. mRNA is a polymer of:
A) Deoxyribonucleosides
B) ribonucleotides
C) Deoxyribonucleosides
D) ribonucleotides
120. The following is a storage protein:
A) Keratin
B) Collagen
C) Glutelin
D) Haemoglobin
121. The difference between RNA and DNA because of:
A) Sugar and base
B) Sugar and phosphate
C) phosphate and base
D) sugar only
122. Nucleic acid are related with:
A) Respiration
B) photosynthesis
C) Heredity
D) Reproduction
123. Length of the helix of DNA is:
A) 10 Å
B) 20 Å
C) 34 Å
D) 30 Å
124. Wood and cotton contains large amount of:
A) Lignin
B) Chitin
C) Cutin
D) Cellulose
125. Keratin sulphate is found in:
A) Skin
B) Chlorophyll
C) Cartilage
D) Both (A) and (C)
126. The Fragments of ER are known in:
A) Lysosomes
B) Spherosomes
C) Microtubules
D) Microsomes
127. Which one of the following is used in shatter-proof glass?
A) Cellulose nitrate
B) Cellulose acetate
C) Carboxylmethyl Cellulose
D) Simple Cellulose
128. The conformation of protein is easily changed by:
A) pH
B) Temperature
C) Chemical substances
D) All of these
129. Proteins are classified as simple and conjugated proteins on the basis of:
A) Structure
B) Function
C) Both (A) and (B)
D) Conformation
130. Cancer causing is:’
A) Lactose
.B) Chitin
C) Saccharine
D) Myoglobin
131. The hydrolysis of raffinose yields:
A) Galactose
B) Fructose
C) Glucose
D) All the above.
132. Which one of the following is the fibrous protein?
A) Albumin
B) Globulin
C) Glutelin
D) Collagen.
133. The sugar commonly present in fruits is:
A) Glucose
B) fructose
C) Ribulose
D) Xylulose.
134. Amylose, amylopecten and glycogen contain:
A) Beta glucose
B) Alpha glucose
C) A and B
D) Gamma glucose
135. Proteins of silk fibred are examples of:
A) Simple linear Proteins
B) secondary pleated Proteins
C) Tertiary folded Proteins
D) Quartenary super folded Proteins
136. Heme is derived form:
A) Alanine
B) Serine
C) Glycine
D) Cysteine.
137. Which of the following is not a coenzyme?
A) NAD
B) FAD
C) ATP
D) FMN.
138. Which of the following is basic amino acid?
A) Aspartic
B) Amino
C) Lysine
D) Cysteine
139. A riboside is:
A) Riboside + phosphate + base
B) Riboside + base
C) Riboside + phosphate
D) base +phosphate.
140. Which of the following is not made up of monosaccharides?
A) Sucrose
B) Starch
C) Insulin
D) Glycogen
141. The DNA strands are antiparallel because of?
A) Hydrogen bonds
B) Disulphide bond
C) phosphodiester bonds
D) electrostatic bond
142. Protein nature of enzyme was first suggested by:
A) Leeuwenhoek
B) Sumner
C) Pasteur
D) Miller
143. Membrane carbohydrates when linked to lipids are called:
A) Sphingolipids
B) Glycolipids
C) phospholipids
D) Sterols
144. Number of amino acids in each of alpha and beta chains of haemoglobin in each:
A) 30 in alpha and 20 in beta
B) more than hundred in each
C) twenty one in alpha and thirty in beta
D) fifty one in each.
145. Lactose is present in:
A) Sugarcane
B) fruits
C) Milk
D) Egg
146. Two ringed nitrogenous base is:
A) Cytosine
B) Thymine
C) Uracil
D) Adenine
147. Monobasic phosphate (H2 PO4-) is a buffer against:
A) Neutral
B) Acid
C) Base
D) Excessive loss of salt.
148. Which one of the following is not an essential fatty acid?
A) Stearic acid
B) Linoleic acid
C) Linoleic acid
D) Arachidonic acid
149. Nitrogenous bases do not contain:
A) carbon
B) phosphorus
C) hydrogen
D) all of these
150. A disaccharide that gives two molecules of glucose on hydrolysis is:
A) sucrose
B) maltose
C) lactose
D) none of these
151. Lactose is composed of:
A) glucose + galactose
B) glucose + glucose
C) glucose + fructose
D) fructose + glucose
152. Which of the following is not a micro molecule of life?
A) sugar
B) lipid
C) nucleotide
D) nucleic acid
153. Carbohydrates are formed by joining together of monosaccharides through:
A) Glycosidic bonds
B) peptide bonds
C) ester bonds
D) high energy bonds
154. A true fat (glyceride) molecule consists of one molecule 0f glycerol joined to one
To three molecules of fatty acids by a:
A) Glycosidic bond
B) peptide bond
C) Ester bond
D) High energy bond.
155. Collection of various types of molecules in a cell is known as:
A) Cell body
B) Cytomolecule
C) Cellular pool
D) Inclusions.
156. Monosaccharides contain carbon atoms:
A) 3-7
B) 20
C) 10-15
D) 20-50
157. Stearic acid is:
A) Organic acid
B) Fatty acid
C) saturated fatty acid
D) Unsaturated fatty acid.
158. Cholesterol is:
A) Monosaccharide
B) carbohydrate
C) sterol
D) protein
159. Intine of pollen grain is composed of:
A) lipids and protein
B) cellulose and protein
C) lignin and cutin
D) pectin and lignin
160. Purine and pyrimidines nucleotides polymerise to form:
A) nucleosides
B) amino acids
C) nucleic acids
D) lipids
161. Iron(Fe+2) combines with pigment porphyrin to form:
A) chlorophyll
B) carotenes
C) xanthophyll
D) heme
162. Which of the following sets belongs to distinct class or category?
A) ribose, sucrose, glucose, fructose
B) sterols, waxes, fatty acids, amino acids
C) oils, sterols, waxes, fats
D) nucleotide, nucleoside, nucleus, DNA
163. The digested food products of carbohydrate metabolism in the alimentary canal of mammals are:
A) monosaccharides
B) disccharides
C) polysaccharides
D) all of the above
164. The formation of glucose from non-carbohydrate materials is called:
A) glycogenesis
B) glycogenolysis
C) gluconeogenesis
D) glycosis
165. The basic unit of chitin is:
A) N-acetyl glucosamine
B) glucose
C) galactose
D) fructose
166. Mucilage are:
A) polysaccharides
B) proteins
C) lipids
D) glycolipids
167. Chitin is found in the exoskeleton of:
A) Insects
B) Cyclops
C) Prawns
D) All of them
168. Insolubility of structural proteins in water helps to:
A) Retain the form of the organism
B) Strengthen the structure of the organism
C) Both (A) and (B)
D) None of above
169. Buffer action of protein means:
A) Absorption of alkalies
B) Absorption of added acids without increase in H+ ions Concentration
C) Absorption of additional proteins
D) Absorption of haemoglobin.
170. Which of the following is the richest source of protein?
A) Bean
B) Beef
C) Chicken
D) Fish
171. Of which one of the following alpha glucose does not form component?
A) Amylose
B) Cellulose
C) Amylopectin
D) Glycogen
172. The number of glucose residues in one molecule of cellulose is:
A) About 10,000
B) About 2,000
C) About 6,000
D) About 600.
173. Which one of the following is not a mucilage?
A) Agar
B) Alginic acid
C) Chitin
D) Carrageenin.
174. Which is longest of All the RNA’s?
A) m-RNA
B) r-RNA
C) t-RNA
D) s-RNA
175. The mol. Wt. of Haermoglobin is:
A) 68000
B) 78000
C) 88000
D) 98000.
175. Essential amino acids that are not synthesized in the body but supplied in the diet are:
A) lysine and phenyl alanine
B) tryptophan and leucine
C) valine and methionine
D) All the above
176. a and bglucose differ in orientation of ¾OH group around:
A) C3
B) C1
C) C5
D) C2.
177. Insulin has 51 amino acid in its two polypeptide chains A and B. How many amino acid
Chain A has:
A) 31
B) 20
C) 21
D) 30
178. There are twenty types of amino acids to make a protein. How many types of proteins
You can make from 20 amino acids?
A) 440
B) 2020
C) 120
D) 204
179. The carbohydrates contain:
A) ¾OH group
B) ¾CHO group
C) C=O group
D) All of these.
180. Cellulose is a linear polymer of:
A) b-glucose pyranose molecules
B) Sucrose molecules
C) a- glucose pyranose molecules
D) None of the above.
181. Gun cotton is:
A) Nitrosucrose
B) Nitrocellulose
C) Nitrofructose
D) Glutelin.
182. Which of the following is a fibrous protein?
A) Keratin
B) Histone
C) Albumen
D) Glutelin.
183. Degradation reactions:
A) Are the same as the synthetic reactions.
B) Require a supply of NADOH molecules
C) Can be oxidative reactions
D) Both (A) and (B)
184. P-protein is found in:
A) Potato
B) Plasma
C) Phloem
D) Pear
185. Of the total DNA, cytoplasmic DNA constitute:
A) 40¾50%
B) 1¾5%
C) 25¾30%
D) 85¾99%
186. The two strands of DNA are coiled around:
A) Each other
B) differently
C) Around different axis
D) around a common axis
187. 2.5gms of fat after digestion gives:
A) 500 k. cal
B) 400 k. cal
C) 263 k. cal
D) 1,000 k. cal
188. With iodine solution, glycogen gives :
A) Red colour
B) Blue colour
C) Black colour
D) Yellow colour.
189. Cellullose nitrate is used in :
A) Fabrics
B) Plastic
C) Shatter proof glasses
D) Propellant explosive.
190. b - glucose form a unit component of :
A) Cellulose
B) Amylase
C) Amylopectin
D) Glycogen
191. Catecholainines are produced from:
(a) proline
(b) tryptophan
(c) glycine
(d) tyrosine
192. Relation between amino acid and protein is similar to one that found in between:
(a) glucose and fructose
(b) thymine and Uracil
(c) nucleosides and nucleic acid
(d) nucleotides and nucleic acid
193. Phospholipids can be neutralised by:
(a) glycerol
(b) fatty acids
(c) choline
(d) aspartic acid
194. The protein present in the matrix of connective tissue is:
(a) collagen
(b) albumin
(c) protamines
(d) globulin
195. Glucose is also called:
(a) fruit sugar
(b) malt sugar
(c) milk sugar
(d) blood sugar
196. Monosaccharide found in nucleolous is:
(a) hexose
(b) tetrose
(c) pentose
(d) erythrose
197. Virus contain:
(a) proteins
(b) nucleoproteins
(c) nucleic acid
(d) none of these
198. Which part of a neuron is covered up by a lipid rich layer?
(a) dendrites
(b) cyton
(c) axon
(d) nodes of Ranvier
199. The one which is not the derivative of Tyrosine in vertebrates:
(a) melanin
(b) thyroxine
(c) insulin
(d) adrenalin
200. Choose the perfectly matched pair:
(a) haem—Cofactor
(b) globulin—Conjugated protein
(c) cytochrome—Found in serum of mammals
(d) indole 3-acetic acid—Plant hormone formed by tryptophan
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