Where does sugar enter the bloodstream and where does it leave the bloodstream?

Regarding most of the narrator’s story, which word best describes the tone?

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.