Which of the following is true of antibodies?
a. antibodies are proteins.
b. antibodies are specific to pathogens.
c. antibodies are produced by the immune system.
d. all of these are true.
treatment of an illness can include:
a. staying home
b. getting lots of rest
c. drinking plenty of fluids
d. all of these

Emotional signs of stress include aches and nausea

10alcohol affects the brain, reducing a person's ability to think clearly. the driver may not and actually feel he/she is performing better than they actually are.

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.