* 5. Jose and Kyle are comparing the temperature readings of four different objects: block of wood, metal tray, wool hat glass plate (see diagram B above).
They place the objects on a table in their science classroom and leave them overnight. A thermometer
is attached to each object. The next day they record the temperature of each object at the same time.
Which statement is correct?

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.