The hormone progesterone triggers the smooth muscles of the uterine wall to begin the contractions of labor
a. True
b. False
ANSWER: False
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Which of the following is true of ?-independent termination of transcription?
A. It relies on the production of an RNA transcript with self-complementary sequences. B. It utilizes a hexameric helicase. C. RNA polymerase stalls at a specific sequence of GC base pairs. D. It occurs when the sigma subunit dissociates from the polymerase. E. It requires ATP hydrolysis.
All of the following would help to reduce the amount of greenhouse gases in the atmosphere EXCEPT
a. planting trees. b. reducing emissions from factories. c. reducing water usage. d. using solar heat in homes. e. walking to work.
What evidence supports the idea that some nuclei are totipotent?
a. Nuclei taken from the cells of an embryonic frog can direct a frog egg to develop into a tadpole. b. Nuclei taken from the cells of a frog embryo can direct any amphibian egg to develop into a tadpole. c. Nuclei taken from a different species can direct a tadpole egg to develop into a normal tadpole. d. Some cells are capable of undergoing unlimited cell cycles.
e. Some cells are capable of arresting their cell cycle at will.The deliberate removal of genetic material from one organism and combining it with the genetic material of another organism is a specific technique called
A. gene probes. B. genetic engineering. C. recombinant DNA technology. D. biotechnology. E. gel electrophoresis.