Enzymes act as catalysts because

a: they raise the activation energy

b: they lower the activation energy

c: they use activation energy

d: they maintain activation energy

B.) they lower the activation energy.

Enzymes are proteins functioning as catalysts that speed up reactions by lowering the activation energy. Hope this helps! :)

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.