Question

unit 1.4 cell transport, homeostasis, feedback quiz 2025
extra credit:
cyclooxygenase (cox) is involved in the production of prostaglandins, which are chemicals that promote inflammation, pain, and fever. aspirin binds to the active site of cox, preventing it from producing prostaglandins. this is why aspirin is commonly used as a pain reliever and anti - inflammatory drug.
part 1 - what type of molecule is cyclooxygenase?
part 2 - what type of molecule is aspirin?

Explanation:

Part 1

Cyclooxygenase (COX) is an enzyme. Enzymes are proteins that act as biological catalysts, speeding up chemical reactions in cells. COX functions in the production of prostaglandins, and its role as a catalyst (speeding up the reaction to make prostaglandins) and the fact that it has an active site (where aspirin binds) are key characteristics of enzymes (which are a type of protein).

Aspirin binds to the active site of COX, preventing it from functioning (producing prostaglandins). Molecules that bind to the active site of an enzyme and inhibit its activity are called enzyme inhibitors. Aspirin acts as a competitive inhibitor (binding to the active site, competing with the substrate for binding) of COX.

Answer:

Cyclooxygenase is a protein (specifically an enzyme).

Part 2