You are walking on the school playground and notice an unusual object mostly buried. You dig it up and clean it off and discover it is a mineral! You want to try to identify which mineral it is. What different observations can you make to help you determine your unknown mineral?

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