What would be the effect on in vitro transcription if you replaced the entire TFIID protein with the single subunit TBP?
A. Transcription could not be terminated
B. The initiation complex could not form
C. RNA polymerase II would never be recruited to carry out elongation
D. There would be no effect
D
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During inspiration (a.k.a. inhalation) of air into the lung of a mammal
A. the intercostal muscles relax. B. the chest cavity has a positive pressure. C. the diaphragm contracts. D. the diaphragm moves upward. E. the rib cage moves down.
There are no long-term data to support the idea that the community structure of aquatic species has changed due to climate change
Indicate whether the statement is true or false
Researchers studying groupies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently. Which of the following is most important in driving the guppies to change their life history in face of predation?
A. The guppies are an equilibrium species. B. The guppies are an opportunistic species. C. Density-independent factors affects the guppy populations. D. Density-dependent factors affects the guppy populations. E. Sexual selection affects the guppy populations.
What role is a wolf playing when it eats a rabbit that eats grass on a prairie in Wisconsin?
A) detritivore B) primary consumer C) producer D) tertiary consumer E) secondary consumer