The Na+/K+ pump generates a membrane potential across the plasma membrane (PM) of the cell by transporting Na+ and K+ across the PM. The action of this pump results in the cell having a slightly charge inside the cell compared to the extracellular space.

Explanation:

The sodium-potassium pump transports sodium out of  the cell and potassium into the cell through plasma membrane. In each cycle, 3 sodium ions exit the cell, while 2 potassium ions enter. For every three ions of sodium that move out of the cell, only two ions of potassium move inside the cell, resulting in a more negative charge inside the cell interior. This generates membrane potential.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.