Oxidized hydrogen does not participate in mineral formation.
The structure is a phospholipid bilayer. There are many phospholipids which contain a water loving phosphate end and a water hating lipid (fatty) end. The phosphate ends all point out words while the fatty ends are inside.
The purpose is protection of the cell as well as allowing certain molecules to enter and exit the cell
That means <span>the fluid portion of the cytoplasm exclusive of organelles and membranes.</span>