What is the mechanism by which binding of testosterone to the testosterone receptor leads to upregulated gene transcription?
A. Binding of testosterone to the testosterone receptor leads to the increase in second messengers that
activate a kinase cascade, ultimately leading to the activation of transcription factors that promote gene
transcription.
B. Binding of testosterone to the testosterone receptor leads to the activation of a G protein that
stimulates the activation of enzymes that promote gene transcription.
C. Binding of testosterone to the testosterone receptor leads to a conformational change that allows the
receptor to enter the nucleus where it can bind to DNA and promote gene transcription.
D. Binding of testosterone to the testosterone receptor leads to the opening of an ion channel that leads to
an increase in calcium in the cytoplasm. The increased calcium levels activate calmodulin, which can go
on to activate other proteins that promote gene transcription.
C. Binding of testosterone to the testosterone receptor leads to a conformational change that allows the
receptor to enter the nucleus where it can bind to DNA and promote gene transcription.
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The figure above represents
a. a chromosome in the G1 phase of interphase. b. two chromosomes in metaphase plate. c. an original chromosome with a duplicate. d. the entire genome of the organism. e. none of these.
What is the organ in animals without teeth such as
earthworms and birds that accomplishes the same action as teeth? a. beak b. pharynx c. gizzard d. cloaca e. crop
The age structure diagram for countries with a 6.5
total fertility rate is indicated by a. A. b. B. c. C. d. D. e. none of these.
Which type of crossover event produces no recombinant chromosomes?
A) single-strand crossover B) two-strand double crossover C) three-strand double crossover D) four-strand double crossover E) None of the above; all crossover events produce recombinant chromosomes.