What is the basic function of catabolic operons like the lac operon? a. to find an alternative energy source when glucose is absent or not present in sufficient amounts b. to find an alternative source of carbon when glucose is absent or not present in sufficient amounts c. to find an alternative source of carbon regardless of the amount of glucose present

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What is the basic function of catabolic operons like the lac operon? a. to find an alternative energy source when glucose is absent or not present in sufficient amounts b. to find an alternative source of carbon when glucose is absent or not present in sufficient amounts c. to find an alternative source of carbon regardless of the amount of glucose present

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I do not believe that it is C, because operon lacquer is only turned on when glucose is not available, or contains only trace elements. This answer suggests that the operon lac could be turned on at any time, which is not correct.

I’m throwing up between A and B, but I believe B is more specific, because lactose is a source of carbon, acting as an energy source.

I would go B.