You and another rescuer find an unconscious adult on the floor. The other rescuer goes to summon more advanced medical personnel. You complete a primary assessment and find that the victim has a pulse but is not breathing. Which of the following should you do next?

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.