text: nutrients for cell growth..? hi.   can anyone explain (if possibly in some detail), the various types of nutrients required by cells for growth and also the reasons for requiring these nutrients (e.g. "without this cells cannot....")  thanks! all help is greatly appreciated...but please do not put up a copy/pasted version from wikipedia - already tried that site. i need some one to explain it clearly to me.  thanks again!!  :) have you tried this one? i cant explain in detail cos it would take me too long.