Solved Past Papers MCQs of Lecturer Zoology for the preparation of NTS, PPSC, SPSC, BPSC, KPSC, FPSC, OTS, and other academic entry tests and jobs tests.
76. In Microcephaly, the individuals are born with small
A) Skull
B) Eyes
C) Brain
D) Hands
77. Reinnitiation of DNA duplication within the same cycle is prevented in
A) Eukaryotes
B) Prokaryotes
C) Viroids
D) Viruses
78. Thymine dimmers damage in DNA is produced by …….. radiations
A) Gamma
B) Infra-red
C) Ultraviolet
D) All of these
79. Which of the following is responsible to cause Klinefelter’s syndrome
A) XO
B) XXY
C) XX
D) XYY
80. Which of the following is the initiation codon
A) UGU
B) UAG
C) AUAA
D) AUG
81. This factor is necessary for transcriptional initiation in prokaryotes
A) Alpha
B) Beta
C) Gamma
D) All of these
82. In glucose molecule, the number of asymmetric carbon atoms is
A) One
B) Two
C) Three
D) Four
83. Which of the following is NOT an amino acid
A) Glutamic acid
B) Aspartic acid
C) Glutamine
D) Palmitic acid
84. What will be the frequency of T in a population if tasters are 64%
A) 0.24
B) 0.4
C) 0.6
D) 0.8
85. The process in which bacteria take up the DNA released from lysed cells nearby or surrounding medium is
A) Generalized Transduction
B) Conjugation
C) Specialized transduction
D) Transformation
86. Blood group system ABO was discovered by
A) Bernstein
B) Landsteiner
C) Correns
D) T.H. Morgan
87. Which is the correct order, from smallest to largest of base pairs
A) Plasmid, transposon, chromosomal DNA
B) chromosomal DNA, transposon, plasmid
C) Transposon, plasmid, chromosomal DNA
D) Plasmid, chromosomal DNA, transposon
88. Phenotype ratio of monohybrid crosses with incomplete dominance
A) 3 : 1
B) 1: 2 : 1
C) 2 : 2
D) 9 : 3 : 3 : 1
89. Assuming Hardy-Weinberg equilibrium, what will be the genotype frequency of heterozygote, where frequency alleles being studied are 0.7 and 0.3
A) 0.42
B) 0.5
C) 0.48
D) 0.21
90. The most abundant and best-known greenhouse gas is
A) Methane
B) CO2
C) CFCs
D) Nitrogen
91. Mangrove forests are common in
A) Bahawalpur
B) Karachi
C) Murree Hills
D) Quetta
92. Methyl group is attached to carbon number 5 of
A) Thymine
B) Cytosine
D) Guanine
D) Uracil
93. The environment where evaporation exceeds precipitation is called
A) Desert
B) Tropical
C) Temperate
D) Coniferous
94. This step is absent in the Calvin cycle
A) Carbon fixation
B) Oxidation
C) Reduction
D) Regeneration of CO2 acceptor (RuBP)
95. Grassland ecosystems are common in Pakistan like in
A) Shinji
B) Lal Sunhara
C) Mangala
D) Deosai
96. A large regional community primarily determined by climate is
A) Biome
B) Biotype
C) Ecotone
D) Range
97. Which of the following trophic level represents the carnivores
A) Producers
B) Primary consumers
C) Secondary consumers
D) Decomposers
98. Without this phenomenon average temperature of the earth might be less than -71°C
A) Ozone depletion
B) Greenhouse effect
C) Deforestation
D) Desertification
99. Morphology similar or identical populations that are reproductively isolated are
A) Sibling species
B) Allopatric species
C) Parapatric species
(D) Geographical species
100. These rocks are rich in fossils
A) Igneous rocks
B) Sedimentary rocks
C) Metamorphic rocks
D) Salt mines
