In which process does water move plants to the air
a. percolation
b. runoff
c. precipitation
d. transpiration

Which feature of a human community is similar to a niche in a biological community

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.

What is the function of the nucleus in the euglena cells you observed?