Question

Under what condition is the arac protein an activator? under what condition is the arac protein an activator? the arac protein is an activator when it is bound to any sugar molecule. the arac protein is an activator when it is bound to lactose. the arac protein is an activator when it is bound to cyclic amp. the arac protein is an activator when it is bound to arabinose. the arac protein is an activator when it is bound to glucose.

Answer 1

An activator is a protein that binds to a DNA regulatory sequence to increase the frequency of transcription by the enzyme RNA polymerase. The condition under which the AraC protein acts as an activator is  when it is bound to arabinose. AraC is a regulatory gene or regulatory protein of the E.coli ara operon