Page 110 - The Miracle in the Cell Membrane

The Miracle in the Cell Membrane

same route, and you pull your hand back in that same sec -
ond. 37
What inju ry would your hand suf fer if you pulled it
back after a few sec onds' delay? Yet in excep tion al sit u a -
tions Allah has includ ed pre cau tions to be taken in all
parts of the body. By Allah's leave, the cells flaw less ly
carry out the func tions entrust ed to them that require intel -
lect, fore sight and
con scious ness, with

(1) (2) no con fu sion ever
(3)
aris ing. Yet you are
com plete ly una ware
of what is tak ing
place.

Facilitated diffusion takes place by means
of a transporter: (1) When the substance to Facilitated dif -
be transported attaches to the transporter fu sion: In this man -
protein, the transport protein changes
shape, and the end of the cell channel ner of trans port,
opens. (2) The molecule begins to enter pro teins play a role
from here. (3) When the protein reaches a
location near the inside of the cell, the pro- in the pas sage of
tein—whose movement results from heat— mol e cu les or ions.
separates from the molecule to which it is Facilitated dif fu sion
only weakly attached, and the molecule
enters the cell. also refers to dif fu -
sion by means of
trans port ers. The trans port pro tein binds to the mol e cule
or ion chem i cal ly and thus ena bles it to pass through the
cell mem brane.
Once bound to the sub stance to be trans port ed, the
trans port mol e cule chan ges shape. The end of the cell

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