In a chemical reaction, enzyme catalyse the reaction by

Lowering the activation energy.

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Increasing the activation energy.

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Decreasing the free energy change between reactants and products.

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Increasing the free energy change between reactants and products.

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Solution

The correct option is B Lowering the activation energy.
In a chemical reaction, enzyme acts as catalyst. It accelerates the rate of reaction by lowering the activation energy needed to start a reaction. The enzyme converts substrate into product without changing itself.
Thus, the correct answer is option A.

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\begin{matrix} a) & a & (i) & A c t i v a t i o n e n e r g y o f f o r w a r d r e a c t i o n b) & b & (i i) & C h a n g e i n e n t h a l p y c) & c & (i i i) & A c t i v a t i o n e n e r g y o f b a c k w a r d r e a c t i o n d) & d & (i v) & P o t e n t i a l E n e r g y o f R e a c t a n t s e) & e & (v) & P o t e n t i a l e n e r g y o f P r o d u c t s \end{matrix}

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