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Inducible and Repressible Operons
Grade Level
AP Biology
APB.324 Inducible and Repressible Operons
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Which result would most strongly argue against an inducible model for a catabolic operon?
A
Transcript level is low without substrate and rises when substrate is added
B
Transcript level is high without substrate and falls when substrate is added
C
A repressor binds the operator when inducer is absent
D
A substrate derivative lowers repressor binding to the operator
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