Question

question 6
enzymes speed up chemical reactions by ___ the energy needed to start the reaction.
a increasing
b decreasing
c providing
d producing

Explanation:

Enzymes act as biological catalysts. Catalysts speed up reactions by lowering (decreasing) the activation energy, which is the energy needed to start a reaction. They don't provide or produce energy, and increasing activation energy would slow the reaction. So the correct option is the one that says decreasing.

Answer:

B. decreasing