According to the CDC's standard precautions, what type of body fluids must be considered as potential sources of infection? a. Only blood
b. Blood and excretions
c. Fluids from patients who have infectious diseases
d. All body fluids
D. All body fluids

What ingredients used in tobacco products been banned?

Warming up prepares the body for exercise in what way? a. muscularly b. cardiovascularly c. neurologically d. all of the above

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.