Entrance Test For Biotechnology Page 12
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2368. Urea
w as
s ynthesized
f rom
s ilver/ammonium
c yanate
b y:
a) Fredrick
S anger
b) Fredrick
W ohler
c) Francis
B acon
d) RB
W oodward
69. An
i nstrument
h as
a
b uilt
i n
g rating
f or
d iffraction
o f
l ight
b ut
w orks
i n
v isible
range
o nly.
I t
c an
b e
n amed
a s:
a) Spectrophotometer
b) Spectrocolorimeter
c) Photoelectric
c olorimeter
d) Spectrograph
7 0.
W hich
o f
t he
f ollowing
c ells
a re
m ost
r are
i n
b lood
c irculation?
a) Basophils
b) Neutrophils
c) Monocytes
d) Eosinophils
7 1.
I mmunoglobulin
m olecules
c ontain:
a) One
l ambda
a nd
o ne
k appa
l ight
c hains
b)
T wo
L ambda
l ight
c hains
o f
d ifferent
t ype
c) Two
K appa
l ight
c hains
o f
d ifferent
t ype
d) Two
i dentical
l ambda
o r
k appa
l ight
c hains
7 2.
H uman
i mmunodeficiency
v irus
i nfects
a) T
h elper
c ells
b) B
c ells
c) NK
c ells
d) T
c ytotoxic
c ells
73.
W hich
o f
t he
f ollowing
p athogens
h as
r ecently
c ome
i nto
l imelight
f rom
S outh
A merica?
a) Human
i mmunodeficiency
v irus
b) Zika
v irus
c) Ebola
v irus
d) Swine
f ever
v irus
74. A
p rotein
w as
f ound
t o
c ontain
0 .204%
a s
t ryptophan
( mol.
W t.
2 04).
T he
m inimum
m olecular
w eight
o f
t he
p rotein
w ould
b e:
a) 204000
b) 102000
c) 100000
d) 20400
7 5.
W hen
t he
c hromosome
r eplicates,
h ow
i s
t he
n ewly
m ade
s trand
r elated
t o
i ts
t emplate
s trand?
a) The
t wo
s trands
h ave
i dentical
s equences
a nd
a re
p arallel
t o
e ach
o ther.
b) The
t wo
s trands
h ave
c omplementary
s equences
a nd
a re
p arallel
t o
e ach
other.
c) The
t wo
s trands
h ave
i dentical
s equences
a nd
a re
a ntiparallel
t o
e ach
other.
d) The
t wo
s trands
h ave
c omplementary
s equences
a nd
a re
a ntiparallel
t o
each
o ther.
12
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