Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell

I believe it is B which is the cell membrane

Explanation:

The cell membrane controls the flow of molecules in and out of the cell.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )