The picture above is that of a nucleus. the dark dense area is the nucleolus. what is its main function? a) dna synthesis b) ribosome assembly c) protein synthesis d) chromatin formation the answer is : b ribosome assembly

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.