The sodium-potassium pump, shown below, is a mechanism that allows cells to move sodium ions out of the cell and potassium ions into the cell, against a concentration gradient (i. e., from a low concentration to a high concentration).

picture of sodium pump

this mechanism maintains the correct concentrations of sodium and potassium ions inside of a nerve cell. although this pump uses energy, it is necessary to maintain these conditions so nerve impulses can be transmitted properly.

which of the following statements does this information best support?

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

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.

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