Genes under positive control are ____.
A) off until they are turned on
B) always expressed
C) expressed unless a repressor protein is present
D) controlled by several promoters to increase transcription
E) regulated by feedback inhibition
Correct Answer:
Verified
Q1: If the lacI repressor gene were permanently
Q2: Where is the trp repressor gene located?
A)
Q3: The trp operon is _ unless tryptophan
Q5: Regulatory proteins bind to the _ of
Q6: What is the relationship between operons and
Q7: The genes in an operon are _.
A)
Q8: In prokaryotes, high levels of cAMP _.
A)
Q9: In prokaryotes, the genes for metabolic pathways
Q10: The E. coli lac operon encodes three
Q11: How is lac operon transcription regulated by
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