1.

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:

Answer»

`1.568xx10^(4)` amu
`1.568xx10^(7)` amu
`1.568xx10^(3)` amu
`1.568xx10^(6)` amu

Solution :`because 0.5g SE` is present in 100g ENZYME.
`therefore 78.4g Se` will be present in `(100)/(0.5)xx78.4 g` enzyme
=15680amu
`=1.568xx10^(4)` amu.


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