Dr. Smith has determined that John Jones has an accumulation of fluid in the chest cavity. The doctor is surgically puncturing through the space between John's ribs, using an aspirating needle to withdraw the fluid from the chest cavity. This procedure is known as a .A) pleurodesisB) thoracentesisC) thorax punctureD) thoracotomy

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

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.