The most common zoonotic disease in the United States is:
A) Lyme disease.
B) plague.
C) rabies.
D) Rocky Mountain spotted fever.
A) Lyme disease.
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Endotherms:
A. All of the answer options are correct. B. generate heat from the breakdown of food and other metabolic reactions. C. usually maintain a constant body temperature that is higher than that of their environment. D. include mammals and birds. E. have high metabolic rates.
As the period of fetal growth comes to an end, a steep rise in ____ levels directly causes ____
a. progesterone; uterine cells to express oxytocin receptor genes b. progesterone; uterine contractions c. estrogen; uterine cells to express oxytocin receptor genes d. estrogen; uterine contractions e. estrogen; oxytocin production
Mad cow disease is caused by an infectious protein, also known as a(n)
a. endospore. b. rickettsia. c. virion. d. prion. e. viroid.
If a woman were exposed to a chemical that caused the cilia in her reproductive system to stop moving, what specifically is likely to happen?
A) She would no longer be able to ovulate, and early menopause would occur. B) Ova could no longer pass through oviducts. C) Spontaneous abortions would occur. D) She would have many ovarian cysts.