Lactose a sugar found in milk products is broken down by enzymes. the making of these enzymes is controlled by a genetic system in e. coli. when there is no lactose present in the body, the repressor protein blocks rna polymerase from binding to the promoter, making impossible.

a. transcription

b. translation

c. replication

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.

Along what geographical feature are most of the oil producing regions located

The smallest parts of these that retain their original properties are called