The sodium-potassium pump regulates the amount of sodium and potassium inside of cells, particularly nerve and muscle cells. in this process, an atp is burned, causing three sodium ions to be pumped out and exchanged for two potassium ions, which are pumped in by a membrane protein. both ions go against their concentration gradients. the sodium-potassium pump is an example of a) phagocytosis. b) passive transport. c) active transport. d) facilitated diffusion.

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

How does a lytic infection differ from a lysogenic infection?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.