Which is the only antibody that can cross the pla¬centa to protect a fetus before its own immune system becomes active?
A. IgA
B. IgE
C. IgM
D. I gG
E. IgD
Answer: D
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Which of the following has no effect on the outcome of the host-parasite relationship?
A. The virulence of the parasite B. The number of parasites on or in the host C. The defenses of the host D. All of the choices are correct.
A collection of similarly specialized cells and any extracellular material they secrete and maintain describes
a. an organ. b. a system. c. a tissue. d. organelles.
Blood pressure is usually estimated from indirect measurements of the pressure in what structure?
A) left ventricle B) aorta C) femoral artery D) brachial artery E) radial artery
How are real examples of zombies different from those seen in movies/tv?
A. Real zombies do not have any mind control exerted over them B. Real zombies cannot die from the interaction with another species C. Real zombies don't have an infection4 D. Real zombies are not coming back from the dead