#Question id: 3974
#Unit 3. Fundamental Processes
A leucine-zipper motif contains
#Question id: 3975
#Unit 3. Fundamental Processes
Which of the following is not a structural motif found in a DNA-binding domain?
#Question id: 3976
#Unit 3. Fundamental Processes
After binding by E. coli RNA polymerase, the correct order of events for transcription initiation is:
#Question id: 3977
#Unit 3. Fundamental Processes
Which one of the following statements about eukaryotic RNA polymerases is correct?
#Question id: 3978
#Unit 3. Fundamental Processes
The 5'-terminal cap structure of eukaryotic mRNAs is a(n):
#Question id: 3979
#Unit 3. Fundamental Processes
“Housekeeping genes” in bacteria are commonly expressed constitutively, but not all of these genes are expressed at the same level (the same number of molecules per cell). The primary mechanism responsible for variations in the level of constitutive enzymes from different genes is that: