Human tears contain an enzyme called lysozyme which damages the cell walls of bacteria. which of the following best explains how this enzyme a. lysozyme kills bacteria by engulfing them. b. lysozyme breaks through bacterial cell walls, killing the bacteria. c. lysozyme catalyzes a reaction that breaks down bacterial cell walls. d. lysozyme is destroyed as it digests bacterial cell wall molecules.

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.