During the reaction, the ____ will be attached to the active site. After reaction, the ____ leaves the enzyme complex.

1. amino acid
2. substate
3. carb
4. product

1 answer

During the reaction, the substrate will be attached to the active site. After the reaction, the product leaves the enzyme complex.

So the complete sentences would be:

"During the reaction, the substrate will be attached to the active site. After the reaction, the product leaves the enzyme complex."