Allosteric enzymes have two distinct binding sites. What is the purpose of each type of binding site?

• A. The active and allosteric sites are used interchangeably depending upon environmental conditions.
• B. The active site only serves as a placeholder while all functional changes occur at the allosteric site.
• C. The active site facilitates substrate binding, while the allosteric site binds regulatory molecules for activity control.
• D. All binding occurs at the active site while the allosteric site is merely structural in significance.

Answer: (C)