Bioaccumulation is the buildup of a persistent pesticide in . biomagnification is the buildup of a persistent pesticide in . a. an individual organism's body; organisms at the top of the food chain b. oceans and seas; lakes and ponds c. an individual's blood stream; an individual's fatty tissues d. plants; animals

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.