When an atom loses or gains electrons, it becomes
a) ion
b) formula
c) crystal
d) subscript

Which statement best describes the role of religion and culture in ancient medicine?

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

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.