Which of the following provides the best example of how comparative embryology supports the theory of evolution

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

Wich of the following are manual restraint techniques for dogs

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.