Charge the plates so that the electric field between them is strong enough to deflect positive or negative atoms. How does the mass of an atom affect the amount a charged atom gets deflected?

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion