TELLURIUM ELECTRONS GAINED OR LOST?

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

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Will mark brainliest how many electrons can be held in the energy level n = 4?