The diagram shows an enzyme, its substrate and an enzyme-substrate complex. Which statement explains why this substrate can enter the active site of this enzyme?
- 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.