Capitulo
Tres: Biología Célular
Membrana
de la Célula
![](images/phos1.jpg) |
Este
es una respresentacion de un fosfolipido simple. La estructura amarilla
representa la “hydrophillic” o seccion
de gusto por el agua del fosfolipido. Las colas azules que salen de la esfera respresentan la hidrofobia o miedo al agua en el parte
final del fosfolipido. A coninuacion esta el modelo estructural de un
fosfolipido que explica que significan estos terminos.
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The two long chains coming off of the bottom of this molecule are made up of carbon
and hydrogen. Because both of these elements share their electrons evenly these
chains have no charge (gasoline is also a hydrocarbon). Molecules with no charge
are not attracted to water; as a result water molecules tend to push them out of
the way as they are attracted to each other. This causes molecules with no charge
not to dissolve in water (this is why gasoline and water do not mix).
At the other end of the phospholipid is a phosphate group and several double
bonded oxygens. The atoms at this end of the molecule are not shared equally. This
end of the molecule has a charge and is attracted to water.
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![](images/phos2.gif) |
![](images/phos3.jpg) |
Si
se mezclan fosfolipidos en agua estos
forman estas estructuras de doble capa. La parte terminal del
“hydrophillic” estara en contacto con el agua. La parte terminal de la
hidrofobia mirara hace adentro tocandosen una otra.
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