Biology Chapter 3 Entry test MCQs
76. Myelin sheath of neuron is composed of:
a. Choline
b. Sphingolipids
c. Waxes
d. Ethanolamine
77. How many double bond’s is/are present in R-group of oleic acid?
a. 6
b. 4
c. 1
d. 2
78. Which of following cannot form a biopolymer?
a. Fatty acid
b. Amino acid
c. Monosaccharides
d. Nucleotides
79. If in lipids there is a higher proportion of unsaturated fatty acid, then it will be:
a. Waxes
b. Oils
c. Fats
d. Phenols
80. Which of the following is an unsaturated fatty acid?
a. Stearic acid
b. Butyric acid
c. Palmitic acid
d. Oleic acid
81. Sara is a chemistry student who is carrying out an experiment between an alcohol and acetic acid in the laboratory. The product formed at the end of the experiment will be:
a. Glycogen and water molecule
b. Glucose and oxygen
c. Glycerol and Sulfuric acid
d. An ester and water molecule
82. Lipids contain double amount of energy as compared to the same amount of carbohydrates due to the presence of:
a. Higher proportion of C-H bonds
b. Lower proportion of C-H bonds
c. Higher proportion of oxygen
d. Higher proportion of C-O bonds
83. Lipids are organic molecules which are insoluble in:
a. Chloroform
b. Alcohol
c. Water
d. Ether
84. What type of linkage is formed when an alcohol and an acid react?
a. Glycosidic linkage
b. Hydrogen bond
c. Ester bond
d. Peptide bond
85. Lipids store double amount of energy as compared to carbohydrates because of:
a. High CO ratio
b. High proportion of oxygen
c. High proportion of CH
d. Low proportion of carbon
86. The head of phospholipid molecule is polar (hydrophilic) due to:
a. Carboxylic acid
b. Fatty acid
c. Triacylglycerol
d. Phosphate
87. Which of the following are the most prominent part of cell membranes in living organisms?
a. Phospholipids
b. Terpenoids
c. Acylglycerols
d. Waxes
88. An organic compound that belongs to lipids:
a. C300H500O250
b. C18H32016
c. C42H85O23N17S
d. C57H110O6
89. It is precursor of bile acids:
a. Steroids
b. Waxes
c. Acylglycerol
d. Phospholipids
90. Lipase can hydrolyze them:
a. Waxes
b. Triglycerides
c. All of these
d. Terpenoids
Nucleic Acid
91. All of the following biomolecules are nutritious except:
a. Proteins
b. Carbohydrates
c. Nucleic acids
d. Lipids
92. It contains nitrogenous base:
a. ATP
b. Glycogen
c. Haemoglobin
d. Cellulose
93. Nucleo-histones are present in:
a. Chromosomes
b. Lysosome
c. Mitochondria
d. Ribosomes
94. Phosphodiester bond is:
a. C–O–P
b. P–O–C–P–O–C
c. C–C–O–P
d. C–O–P–O–C
95. Which of the following is the constituent of RNA molecule?
a. Ascorbic acid
b. Fatty acids
c. Deoxyribonucleic acid
d. Ribonucleic acid
96. Type of RNA that is used to start process of replication in prokaryotic cell:
a. mRNA
b. tRNA
c. Primers
d. rRNA
97. Which of the following type of RNA is catalytic in nature?
a. mRNA
b. tRNA
c. Ribozyme
d. rRNA
Conjugated molecules (Glycolipids, Glycoproteins)
98. Conjugated histone proteins are:
a. Structure only
b. Structural and regulatory
c. Transport proteins
d. Regulatory only
99. All of the following are conjugated molecules except:
a. Glycoproteins
b. Glycolipids
c. Phospholipids
d. Nucleoproteins
100. Most of the cellular secretions are:
a. Glycoproteins
b. Glycolipids
c. Nucleoproteins
d. Lipoproteins
101. Type of conjugated molecules present in ribosomes:
a. Glycolipids
b. Glycolipids
c. Lipoproteins
d. Nucleoprotein