In the regulation of lac operon, when the medium contains only glucose, which statement is true?( )
A、concentration of cAMP is high, CAP is active
B、concentration of cAMP is high, CAP is inactive
C、concentration of cAMP is low, CAP is inactive
D、concentration of cAMP is low, CAP is active
发布时间:2025-03-16 08:52:45