Promoters for Pol II typically have a TATA box and Inr sequence, as well as multiple binding sites for transcription activators. The latter sites, sometimes located hundreds or thousands of base pairs away from the TATA box, are called

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#Question id: 32244

#Unit 2. Cellular Organization

What is a suggested mechanism for retaining ER resident proteins in the ER?

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#Question id: 11127

#Unit 7. System Physiology – Animal

As the receptor potential rises higher above threshold, which of the following best characterizes the new frequency of action potentials?

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#Question id: 4077

#Unit 3. Fundamental Processes

Which of the following is (are) associated with most polyadenylation events?

a. cleavage of the 5´ end of the RNA molecule

b. an assembly of a large, multiprotein complex

c. the AAUAAA site upstream of where polyadenylation will occur

d. a GU-rich or U-rich region near the cleavage site

e. slow addition of A residues followed by rapid addition of 200 to 250 more A residues

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#Question id: 28956

#Unit 7. System Physiology – Animal

Which of the following symporter is found in  Basolateral membranes of thyrocytes? 

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#Question id: 10821

#Unit 10. Ecological Principles

What factor does not contribute to the rapid loss of nutrients from terrestrial ecosystems?