Select the descriptions that apply to the sodium‑potassium pump. The pump moves potassium ions into the cell and sodium ions out of the cell.

Adenosine triphosphate (ATP) is necessary for the pump’s function.

Sodium ions and potassium ions move into and out of the plasma membrane by osmosis.

The concentration gradient of the ions determines the direction of movement through the pump.

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. b. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. c. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails.

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

Did you know that a blue wales tongue weighs more than an elephant?