In the presence of lactose, the gene for beta-galactosidase is turned on by induction. The RNA polymerase binds to the promoter, in the presence of lactose. Lactose binds to repressor leading to structural changes so that it does not bind to the promoter. This leads to the production of beta-galactosidase which breaks the bond between glucose and galactose, for utilization of lactose.
Answer:
B
Explanation:
the constant in biology does not change during an experiment. it is also called the controlled. think of it the same as algebra.
