Question

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

Answer 1

Statement A,B,C are true so the correct option is D-All of the above

Answer 2

Answer:

D. All of the above.

Enzymes are globular proteins that have three dimensional structure. They do not alter the overall change in free energy required for reaction and they lower the activation energy to speed up the reaction. So, all of these options are right and the correct answer is D.