81. Under which of
the following conditions will there be no change in the reading frame of
following mRNA?
5¢AACAGCGGUGCUAUU3’
(1) Insertion of G at
5th position
(2) Deletion of G
from 5th position
(3) Insertion of A
and G at 4th and 5th positions respectively
(4) Deletion of GGU from 7th, 8th and 9th positions
Ans: (4) Deletion of
GGU from 7th, 8th and 9th positions
82.What triggers
activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll
worm?
(1) Body temperature
(2) Moist surface of midgut
(3) Alkaline pH of
gut
(4) Acidic pH of stomach
Answer: (3) Alkaline pH of gut
83. Identify the correct pair representing the causative
agent of typhoid fever and the confirmatory test for typhoid.
(1) Plasmodium vivax / UTI test
(2) Streptococcus
pneumoniae / Widal test
(3) Salmonella typhi / Anthrone test
(4) Salmonella typhi / Widal test
Answer (4) Salmonella typhi / Widal test
84. What is the
genetic disorder in which an individual has an overall masculine development
gynaecomastia, and is sterile ?
(1) Turner's syndrome
(2) Klinefelter's
syndrome
(3) Edward syndrome
(4) Down's syndrome
Answer :(2)
Klinefelter's syndrome
85. Polyblend, a fine
powder of recycled modified plastic, has proved to be a good material for
(1) Making plastic sacks
(2) Use as a
fertilizer
(3) Construction of roads
(4) Making tubes and pipes
Answer :(3) Construction of
roads
86. Which of these following methods is the most suitable for disposal
of nuclear waste?
(1) Shoot the waste into space
(2) Bury the waste under
Antarctic ice-cover
(3) Dump the waste within rocks
under deep ocean
(4) Bury the waste within rocks
deep below the Earth's surface
Answer (4)
87. Match the following
hormones with the respective disease
(a) Insulin (i) Addison's disease (b) Thyroxin (ii) Diabetes
insipidus (c) Corticoids (iii) Acromegaly (d) Growth Hormone (iv) Goitre (v)
Diabetes mellitus
Select the correct
option.
(a) (b) (c) (d)
(1) (v) (i) (ii)
(iii)
(2) (ii) (iv) (iii)
(i)
(3) (v) (iv) (i)
(iii)
(4) (ii) (iv) (i)
(iii)
Answer: (3) (v) (iv)
(i) (iii)
88. Select the
correct option.
(1) 8th, 9th and 10th
pairs of ribs articulate directly with the sternum.
(2) 11th and 12th pairs of ribs are connected to the sternum
with the help of hyaline cartilage.
(3) Each rib is a flat thin bone and all the ribs are
connected dorsally to the thoracic vertebrae and ventrally to the sternum.
(4) There are seven pairs of vertebrosternal, three pairs of
vertebrochondral and two pairs of vertebral ribs.
Answer: (4) There are
seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs
of vertebral ribs.