Here's why:
* Activation Energy: The activation energy is the minimum amount of energy required for a reaction to occur. It's like a "hump" that molecules need to get over to react.
* Enzymes as Catalysts: Enzymes are biological catalysts. Catalysts speed up reactions without being consumed in the process. They do this by lowering the activation energy.
* How Enzymes Lower Activation Energy: Enzymes bind to reactants (substrates) and bring them into a more favorable orientation for reaction. They also provide an alternative reaction pathway that has a lower activation energy.
Think of it like this: Enzymes are like a shortcut through a mountain. Instead of climbing over the whole mountain (high activation energy), you can take the tunnel (lower activation energy) that the enzyme provides. This makes the journey much faster and easier.
