The energy to power passive transport comes from:

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.

Why are some people more concerned about shark survival than about shark attacks?

What is an example of a scientific question that galileo could not have answered with out this new tool?