Which process best describes respiration? a. Removing wastes from the bloodstream b. Breaking down food into smaller nutrients c. Obtaining oxygen and releasing carbon dioxide d. Eliminating pathogens from the blood and lymph fluid

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes.b) no; antibiotics do not kill viruses because viruses do not have dna or rna.c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.