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Standard XII
Biology
Transport of Carbon Dioxide
Q. Percentage...
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Q. Percentage of sulphur in an enzyme is 1.6 % by weight (atomic wt. = 32). The minimum molecular weight of enzyme will be (a) 2000 amu (b) 5000 amu (c) 8000 amu (d) 16000 amu
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Q.
An organic compound contains
C
,
H
and
S
. The minimum molecular weight of the compound containing
8
%
sulphur is:
[atomic weight of
S
=
32
a
m
u
]
Q.
An organic compound contains C,H and S the minimum molecular weight of the compound containing 10% sulphur is : (atomic weight of S=32 amu)
Q.
Cytochrome c is an iron-containing enzyme found in the cells of all aerobic organisms. If cytochrome c is
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F
e
(atomic mass = 56 amu) by weight, then the minimum molecular weight(Kg mol
−
1
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6.5
X
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X
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The percentage of Se in peroxidase enzyme is 0.5% by mass (atomic mass of Se = 78.4 amu). Then, the minimum molecular mass of enzyme which contains not more than one Se atom is:
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O
2
is
32
. Reason: Relative atomic weight of oxygen is
32
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