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Enzymes

Q1: Which of the following statements about enzymes or their function is true?

A Enzymes do not alter the overall change in free energy for a reaction

B Enzymes are proteins whose three-dimensional form is key to their function

C Enzymes speed up reactions by lowering activation energy

D All of the above

ANS:D - All of the above

According to me, it is C. Because the enzymes work by providing an alternative pathway which requires less activation energy and not B. Because the three-dimensional structure that matters here is that of the active site but not the whole enzyme.



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