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In chemical reactions, enzymes ____________ the chemical reaction by ___________the activation energy.

A: speed up; lowering

B: raise the temperature of; increasing

C: is crossed out

D: gathering materials for; increasing

Verified Answer :

AEnzymes speed up chemical reactions because the time needed to activate the reaction is lowered.

The correct answer is option A

All the chemical reactions that takes place in the body of the organism occurs by the help of enzymes. These enzymes acts as the catalyst by increasing the rate of reaction. This increased rate of reaction is done by lowering the activation energy. The energy required to start the reaction is termed as the activation energy and the the enzymes functions by lowering this energy.

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