A45 year-old presents with acute pericarditis. the surgeon makes a small incision between two ribs and enters the thoracic cavity. an endoscope is introduced and the pericardial sac is examined by direct visualization. using an instrument introduced through the endoscope, the surgeon creates an opening in the pericardial sac for drainage purposes. what cpt® code is reported

As molecules are formed from metabolism, entropy __ and the universe becomes less disordered. a. is decreased b. is increased c. moves closer to equilibrium d. is unchanged

True or false multiple lane changes must be done individually going through the same procedures for each lane change

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.