Question

What is the basic function of catabolic operons like the lac operon?

to find an alternative energy source when glucose is absent or not present in sufficient amounts

to find an alternative source of carbon when glucose is absent or not present in sufficient amounts

to find an alternative source of carbon regardless of the amount of glucose present

Answer 1

The basic function of the catabolic operons has alwasy been to find the alternative energy source when glucose is absent or not present in sufficient amounts. So it will be the first option. Hope you find it useful