Chapter 36 – Resource Acquisition and Transport in Vascular Plants
Subject:
Biology [1]
Biology 1120
overview (p. 765)
transport in plants --
at the cellular level – (review these processes from General Biology I if you have forgotten them)
--diffusion – movement of molecules from a region where they are more concentrated to a region
where they are less concentrated
--osmosis – diffusion of water through a differentially permeable membrane from a region where
it is more concentrated into a region where it is less concentrated
--facilitated diffusion – diffusion through specific trans-membrane transport proteins (carriers)
--active transport – movement of molecules from a region where they are less concentrated into a
region where they are more concentrated – this requires energy