Question

Enzymes are proteins that speed up reactions by

providing an additional energy source
supplying additional molecules for the reaction
removing inhibitors that slow down reactions
lowering the amount of activation energy required

Answer 1

Enzymes are proteins that speed up reactions by **lowering the amount of activation energy required**. They do this by providing an alternative reaction pathway, which makes it easier for the reactants to convert into products. This allows reactions to proceed more quickly without changing the overall energy balance of the reaction.