1) This pathogen infects the cells of the immune system, thus allowing opportunistic infections to develop.
2) Which of the following pathogens possesses a plasmid?
a.prion
b.virus
c.all of these are correct
d.bacterium
3) A disease that was previously under control but has recently been observed to be increasing in the population is called a (an) ___________
4) What is the disease that infects the red blood cells of the circulatory system?
5) In an HIV infection, this enzyme is responsible for copying the RNA information in the virus into DNA.