The lac operon in E. coli regulates genes that code for enzymes required for breakdown of lactose. The lac operon is operon that is activated in the presence of .

What would most likely happen if green plants were exposed to longer days of sunlight? a. the mitochondria would produce less energy . b. the chloroplasts would produce more energy. c. the cell wall would become thicker. d. the vacuoles would quickly shrink.b. the chloroplasts would produce more energy.