Question

enzyme acts on only a single substrate or several chemically similar substrates. this figure illustrates how even small differences in shape can determine whether a substrate molecule can bind to the active site of an enzyme. 10a. this enzyme digests a substrate molecule into two product molecules which molecules can this enzyme digest? a__b__ c__ 10b. explain your reasoning.

Explanation:

Enzymes have specific active sites that fit only certain substrates (lock - and - key model). Molecules A and B fit into the active site as per the figure, while molecule C does not.

Answer:

10a. A: Yes, B: Yes, C: No
10b. Enzymes work based on the lock - and - key mechanism. The active site of the enzyme is shaped in a particular way. Molecules A and B have a shape that can fit into the active site (as indicated in the figure), so the enzyme can act on them. Molecule C has a different shape and cannot fit into the active site, so the enzyme cannot digest it.