When (glucose, lactose) ___________ levels inside a bacterial cell are low, cycl

Question

When (glucose, lactose) ___________ levels inside a bacterial cell are low, cyclicAMP levels are (high, low) __________. This is because metabolizes sugars (activate, inhibit) ___________ the enzyme adenylate cyclase, and (activate, inhibit) __________ the enzyme cAMP phosphodiesterase, causing cyclic AMP levels to rise. Consequently, the CAP protein is (Activated, inhibited, unaffected) ___________ by the cyclic AMP and binds to the lac promoter region, and the CAP protein acts like a sigma factor recruiting (DNA, RNA) ___________ polymerase to the promoter. This establishes condition that may lead to the (transcription, replication) __________ of the lac operon if (allolactose, glucose, lactose) _____________ is available to bind to (lac repressor, lacZ, lacY, lacA) _________ protein keeping this protein from binding to the (lacO, lacZ. lacY, lacA) ___________ gene.

Explanation / Answer

when GLUCOSE levels inside a bacterial cells are low, cyclic AMP levels are HIGH. this is because metabolizes sugars ACTIVATES the enzyme adenylate cyclase, and ACTIVATE the enzyme cAMP phosphdieterase, causing cAMP levels to rise. consequently, the CAP protein is ACTIVATED by the cyclic AMP and binds to the lac promoter region, and the CAP protein acts like a sigma factor recruiting RNA polymerase to the promoter. This establishes condition that may lead to the TRANSCRIPTION of lac operon if ALLOLACTOSE is available to bind to LAC REPRESSOR protein keeping this protein from binding to the LAC-O gene.

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