The natural process by which species die off is called

What is the next step in the process after a substrate enters the active site of an enzyme

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

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.