Which one of the following is CORRECT regarding catabolic repression

A. During catabolic repression cAMP binds to other sugars so glucose could be used first
B. It is a a system that allows glucose to be consumed in the presence of some other carbon sources
C. It represses glucose metabolism
D. It allows lactose to be the preferred sugar source over arabinose
E. It regulates amino acid biosynthesis


Ans: B. It is a a system that allows glucose to be consumed in the presence of some other carbon sources

Biology & Microbiology

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Taxis is defined as

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