Who proposed the geological theory of catastrophism?
A) Darwin and Wallace
B) Cuvier
C) Lamarck
D) Darwin
E) Plato
B
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A woman has been treated three times for trichomoniasis, and each time the symptoms disappear for a couple of weeks and then return. She indicates that she has been in a monogamous relationship and that her partner has experienced no symptoms. Which of the following is the most likely explanation for her repeated infections?
A. The woman has been misdiagnosed and has a yeast infection which will need a different antimicrobial. B. The woman is allergic to the prescribed antimicrobials. C. Her partner has an asymptomatic infection and keeps re-infecting her. D. The Trichomonas has become resistant to the antimicrobial that was prescribed.
Which of the following statements regarding microbial changes in a developing fetus are true?
a. the uterus and its contents (baby and placenta) are sterile until vaginal delivery. b. microbes that promote the digestion of milk may be transferred to the baby through the placenta c. microbes that promote healthy skin in a newborn are transferred to the baby as it passes through the vagina d. microbes that promote the digestion of milk may be transferred to the baby as it passes through the vagina
Which hormones play a role in calcium metabolism?
Worms with a well-developed circulatory system (including five pairs of hearts) are
A) echinoderms. B) eels. C) nematodes. D) annelids. E) platyhelminths.