The diagram illustrates an enzyme, the substrate and an enzyme/substrate complex. Which statement explains why the substrate can enter the enzyme's active site?
- AContact between the substrate and the enzyme causes a change in the enzyme shape.
- BThe shape of the active site and the shape of the substrate are complementary.
- CThe substrate within the active site forms hydrogen bonds with amino acids.
- DWhen the enzyme/substrate complex forms, the tertiary structure of the enzyme changes.