The answer is B because viruses don't need to be fed.
The answer to the question is the letter "A" Breakdown glucose.
The function of beta-galactosidase is to break down glucose. This beta-galactosidase is also commonly called "Beta-gal". This enzyme breaks down the glycosidic bond, it also includes carbohydrates that contain glucose.
Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs.
A mutation is one form of genetic variation.
