Blood Oxygen into Cell
Location: Outside U.S.
Date: October 2008
How is Oxygen from blood hemoglobin released into the
cell and directed to where it is needed?
It's all due to diffusion, the movement of substances from an area of
greater concentration to areas of lesser concentration caused by thermal
motion (heat). Oxygen binding to hemoglobin is reversible. When the
concentration of Oxygen is low, the Oxygen molecule is released from
the hemoglobin molecule and is able to diffuse to areas of lower Oxygen
concentration, i.e. inside of cells.
Ron Baker, Ph.D.
Click here to return to the Molecular Biology Archives
Update: June 2012