Describe the Coriolis Effect and its impact on ocean currents

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

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.