Which of the following is NOT normally considered
a temporary method of contraception?
a. birth-control pills
b. vasectomy
c. condoms
d. IUD plus spermicide
e. spermicidal jelly or foam
Answer: b
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Which of the following hormones stimulates uterine contractions during the birth process in mammals?
A. oxytocin B. testosterone C. FHS D. chorionic gonadotropin E. LH
Chemotaxis is a process by which bacteria
A. respond metabolically to the presence of autoinducer molecules. B. avoid phagocytosis. C. move on solid surfaces by means of type IV fimbriae. D. move toward an attractant or away from a repellent.
The hormone erythropoietin (EPO) stimulates the production of red blood cells. If there is a stimulation that increases EPO production, what effect would this have on transport of oxygen and carbon dioxide?
A. Oxygen transport would increase; carbon dioxide transport would not be affected much. B. Oxygen transport would decrease; carbon dioxide transport would not be affected much. C. Oxygen transport would increase; carbon dioxide transport would decrease. D. Oxygen transport would decrease; carbon dioxide transport would increase. E. Oxygen and carbon dioxide transport would both increase.
A regulatory sequence of DNA that is 10,000 base pairs away from the gene it regulates is mutated. The result is that the gene being regulated is now expressed at a higher rate compared to when this regulatory sequence was not mutated. What would this
sequence of DNA best be called? A) activator protein B) insulator C) zinc finger motif D) enhancer E) silencer