Mammals descended from a group of reptiles known as:
a. eutherians.
b. lancelets.
c. therapsids.
d. holothurians.
e. labyrinthodonts.
C
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A bone marrow aspirate is examined for the presence of parasites from a patient who has been traveling in Latin America for several months and who came in contact with a triatomid bug. Which parasite will most likely be identified?
a. Trypanosoma cruzi b. D. fragilis c. Fasciola hepatica d. Chilomastix mesnili
Memory cells may take the form of
A. B cells. B. T cytotoxic cells. C. T helper cells. D. All of the choices are correct.
In all animals, the largest percentage of the body's fluids are located in the:
A. intracellular compartment. B. extracellular compartment. C. interstitial fluid. D. plasma. E. hemolymph.
Which animal would you expect to have the most diverse olfactory receptors to enhance their sense of smell?
a. dog b. monkey c. human d. angelfish e. earthworm