How do enzymes speed up chemical reactions? Enzymes:
A: lower the activation energy of chemical reactions
B: raise the temperature of the cell, speeding chemical reactions.
C: store ATP, allowing more energy to be used in chemical reactions
D: act as miniature "transfer trucks", gathering materials for chemical reactions and placing them together.

Question

How do enzymes speed up chemical reactions?  Enzymes: 
     A:  lower the activation energy of chemical reactions
     B:  raise the temperature of the cell, speeding chemical reactions.
     C: store ATP, allowing more energy to be used in chemical reactions
     D: act as miniature "transfer trucks", gathering materials for chemical reactions and placing them together.

anonymous · Answer

The answer is A. Enzymes lower the activation energy of chemical reactions so the rate of reactions increases.