Question

how enzymes work, products, substrate, enzymes, active site, letter c..., scroll more

Explanation:

To determine what letter C represents in the enzyme - action diagram:

Step 1: Recall the enzyme - substrate interaction model

In the lock - and - key or induced - fit model of enzyme action, the enzyme (the blue structure in the diagram) has an active site. The substrate is the molecule that binds to the enzyme's active site. After the reaction, products are formed.

Step 2: Analyze the diagram

• The blue structure is the enzyme.
• The yellow structure (B) is likely the substrate as it is going to bind to the enzyme.
• The arrow labeled C is pointing towards the region of the enzyme where the substrate will bind. This region is the active site of the enzyme.

Looking at the options on the left: "active site" is the term that describes the region of the enzyme where the substrate binds (as indicated by arrow C).

Answer:

active site