Question

which substrate is correct for the enzyme shown?

Explanation:

To determine the correct substrate for the enzyme, we use the "lock - and - key" or "induced - fit" model of enzyme - substrate interaction. The substrate must have a shape that is complementary to the enzyme's active site. By visually comparing the shapes of the enzyme (the top - right structure) and the three substrate options, we look for the substrate whose shape can fit into the enzyme's active site. The first substrate (the left - most one) has a shape that is complementary to the enzyme's active site, as its protrusions and indentations match the enzyme's active site structure.

Answer:

The left - most substrate (the one with the "W" - like protrusions) is the correct substrate for the enzyme.