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

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

What best describes the structure of the declaration of independence?

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.