Question

what is an active site? *
the part of the enzyme that has a specific shape to bind to the substrate
the location where enzymes are produced
the area where enzymes are stored
the site of enzyme denaturation

Explanation:

An active site is a region on an enzyme. It has a specific shape that allows it to bind to the substrate (the molecule upon which the enzyme acts). Enzymes are produced in cells (e.g., ribosomes for protein - based enzymes), which is not what the active site is. Enzymes are stored in various cellular compartments (like lysosomes for some digestive enzymes) but that's not the active site. Enzyme denaturation (loss of structure and function) can occur in various conditions (e.g., high temperature) and not at a specific'site' related to the definition of an active site.

Answer:

The part of the enzyme that has a specific shape to bind to the substrate.