Question

below is an image with a few enzymes and one substrate. why did you select that enzyme? for this question, you will only tell me why the substrate gets activated by the enzyme you selected.

Explanation:

Enzymes have a specific active site that fits a substrate with a complementary shape (lock - and - key model). Looking at the diagram, the substrate's shape and the active site's shape should match. The enzyme with the shape that can fit the substrate's active site - compatible shape is the one that activates the substrate. From the diagram, the enzyme (let's assume the relevant enzyme is the one with the shape matching the substrate's active site, say the one with the shape that can bind to the substrate's active site region. If we consider the shapes, the enzyme with the shape that has a complementary fit to the substrate's active site (the notch in the substrate) would be the one that activates it. For example, if the substrate has a specific notch, the enzyme with a shape that can fit into that notch (like a key in a lock) is the activating enzyme. So the substrate gets activated by the enzyme whose active site shape is complementary to the substrate's shape, allowing binding and catalytic action.

Answer:

The substrate gets activated by the enzyme whose active site has a complementary shape to the substrate (following the lock - and - key model of enzyme - substrate interaction), allowing the enzyme to bind to the substrate and initiate the catalytic process. (The specific enzyme would be the one with a shape that fits the substrate's active site region as per the diagram's visual representation of complementary shapes.)