A fisherman informs you that he catches fish every Wednesday afternoon. You try fishing on a Wednesday afternoon and do not catch a fish. Despite your experience, the fisherman thinks that his observation is real and should be written in the local books as a scientific finding. He asks you if his discovery is a law or a theory. Write a short response paragraph that explains why his finding is neither a scientific law nor a theory.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit. there is a precise compatibility between the active site and the lactose molecule. specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed. reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.