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Enzymes

Which of the ...

Question

Which of the following reactions is not enzyme-mediated in biological system?

A

Dissolving

C O_{2}

in water

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B

Unwinding the two strands of DNA

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C

Hydrolysis of sucrose

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D

Formation of peptide bond

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Solution

The correct option is B Dissolving $C O_{2}$ in water
Dissolving $C O_{2}$ in water does not require an enzyme. $C O_{2}$ has higher solubility in water than $C O_{2}$ in water can be increased with a decrease in temperature a principle used in carbonated drinks.
So the correct option is 'Dissolving $C O_{2}$ in the water'.

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