1. By how much did the three organisms investigated in this activity grow over the course of ten weeks when the average water temperature was 20ºC? (You may wish to save the
graphs of data to your computer and paste them below to help answer this question.)

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.