Fill in the blanks.1. The specific location within an enzyme molecule where the substrate binds is called the: . 2. During an enzymatic reaction, a molecule of binds to the enzyme and is broken down into one or more molecules of , which are released. 3. A is a molecule that can bind to an enzyme and prevent the enzyme from working. 4. Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a . 5. The between an active site and its substrate often strains bonds and helps the reaction proceed.