Changes

==Facilitated Diffusion==

==Facilitated Diffusion==

[[Image:facildiftri.jpg|right|thumb|200px|<small><center>Schematic of Facilitated Diffusion</center></small>]]

[[Image:facildiftri.jpg|right|thumb|200px|<small><center>Schematic of Facilitated Diffusion</center></small>]]

Transport proteins allow hydrophillic molecules, which are too large to get through water filled protein channels, to passively cross the membrane.  The molecules bind to protein and then the protein changes shape depositing the molecule at the other side of the membrane.  This transport method is also known as '''Facilitated Diffusion'''.  As with diffusion it occurs from areas of high concentration to those of low so is a '''passive''' process.  Unlike [[Active Transport - Physiology| active transport]] which requires energy as it pushes molecules against their concentration gradient.  However [[Active Transport - Physiology| active transport]] does still use proteins

Transport proteins allow hydrophillic molecules, which are too large to get through water filled protein channels, to passively cross the membrane.  The molecules bind to protein and then the protein changes shape depositing the molecule at the other side of the membrane.  This transport method is also known as '''Facilitated Diffusion'''.  As with diffusion it occurs from areas of high concentration to those of low so is a '''passive''' process.  This is unlike [[Active Transport - Physiology| active transport]] which requires energy as it pushes molecules against their concentration gradient.  However [[Active Transport - Physiology| active transport]] does still use proteins

===Differences Compared to Diffusion===

===Differences Compared to Diffusion===