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101. Blood analysis of a patient reveals
an unusually high quantity of carboxyhaemoglobin content. which of
the following conclusions is most likely to be correct ?
The patient has been inhaling polluted
air containing unusually high content of
a) Chloroform b) Carbon dioxide
c) Carbon monoxide d) Carbon disulphide
Ans:c
102. You are required to draw blood from
a patient and to keep it in a test tube for analysis of blood corpuscles and
plasma. You are also provided with the following
four types of test tubes. Which of them will you not use for the purpose?
a) Chilled test tube
b) Test tube containing heparin
c) Test tube containing sodium oxalate
d) Test tube containing calcium bicarbonate
Ans:d
103. The cardiac pacemaker in a patient fails
to function normally. The doctors find that an artificial pacemaker is to be grafted in
him. It is likely that it will be grafted at the site of
a) Purkinje system b) Sinuatrial node
c) Atrioventricular node
d) Atrioventricular bundle
Ans:c
104. What is a keystone species
a) A common species that has plenty
of biomass, yet has a fairly low impact on the community's organisation
b) A rare species that has minimal
impact on the biomass and on other species in the community
c) A dominant species that constitutes
a large proportion of the biomass and which affects many other species
d) A species which makes up only a
small proportion of the total biomas of a community, yet has a huge impact on
the community's organization and survival
Ans:d
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105. The most throughly studied of the
known bacteria-plant interactions is the
a) Gall formation on certain angiosperms
by Agrobacterium
b) Nodulation of Sesbania stems by
nitrogen fixing bacteria
c) Plant growth stimulaton by
phosphate-solubilising bacteria
d) Cyanobacterial symbiosis with
some aquatic ferns
Ans:a
106. Which one of the following precedes
re-formation of the nuclear envelope during M phase of the cell cycle
a) Transcription from chromosomes,
and reassembly of the nuclear lamina
b) Formation of the contractile ring,
and formation of the phragmoplast
c) Formation of the contractile ring,
and transcription from chromosomes
d) Decondensation from
chromosomes, and reassembly of the nuclear lamina
Ans:d
107. The richest sources of vitamin
B12 are
a) Chocolate and green gram
b) Rice and hen's egg
c) Carrot and chicken's breast
d) Goat's liver and spirulina
Ans:d
108. In
transgenics, expression of transgene
in target tissue is determined by
a) Transgene b) Promoter
c) Reporter d) Enhancer
Ans:b
109. A normal woman, whose father was
colour-blind is married to a normal man. The
sons would be
a) 50 %
colour-blind b) All normal
c) All
colour-blind d) 75% colour-blind
Ans:a |
