Lactase is an enzyme that is produced in the lining of the intestines. this enzyme the body speed up the breakdown of carbohydrates that are found in dairy products, such as milk, yogurt, and cheese.
which general function does lactase perform?
fighting disease
creating movement
regulating cell processes
sending chemical messages

The general function that lactase does (as given in the choices you provided above) would be regulating cell processes. Lactase is one of the proteins in the body that help metabolize or break down lactose into simple sugars in order for it to be digested properly. If lactase is not produced, you become lactose intolerant. 

Can you add a picture of the question?

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.