After blood clots, the yellowish fluid that escapes from the clot is called
A. plasma.
B. lymph.
C. fibrinogen.
D. serum.
E. thrombin.
Answer: D
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Rats learning to press a lever to receive food is an example of
A. avoidance. B. operant conditioning. C. habituation. D. inoperant conditioning. E. negative reinforcement.
The crocodile best adapted to a marine lifestyle is:
a. the Asian saltwater crocodile. b. the American crocodile. c. the alligator. d. the Nile crocodile. e. the caiman.
Oxytocin is a hormone that is involved with increasing contractions during childbirth. The action is
binding to membrane receptors and the result is increasing sodium and calcium. Oxytocin is most likely a
a. peptide or protein. b. steroid. c. carbohydrate. d. prostaglandin. e. fatty acid derivative.
Which is not correct about kala azar?
A. Chemotherapy with chloroquine is usually effective. B. It is transmitted by the sand fly. C. It is a form of leishmaniasis. D. It is fatal in untreated cases. E. Death is partly due to anemia, destruction of blood-forming tissues, and secondary infections.