Page 105 - The Miracle in the Cell Membrane

Harun Yahya (Adnan Oktar)

In bod i ly flu ids, all mol e cu les and ions are in a state
of motion, and every sec ond, these mol e cu les make bil -
lions of bounds in var i ous direc tions.

Simple Diffusion
Simple dif fu sion means
Polarized, ionized, water-attracting the pas sage of mol e cu les or
(hydrophilic) substances
ions between mol e cu les in
the cell mem brane, or with -
out being bound to a car ry -
ing pro tein, mov ing by
means of kinet ic ener gy.
Water-repellent
(hydrophobic) unpo-
larized substances Water, urea and water-sol -
u ble sub stan ces pass
Above, the passage of molecules through these spaces.
and ions through the channels
While strict checks are per -
and gaps in the membrane's mol-
ecules, by means of "simple dif- formed for a great many
fusion"—without their binding to
sub stan ces, water is taken
any transport protein.
into the cell with out being
sub ject ed to checks. Because water is of vital impor tance
to the body, it must con stant ly enter and leave the cells.
This there fore takes place with no obsta cles and with no
expend i ture of ener gy.
Though water is almost com plete ly insol u ble in cell
mem brane fats, it can eas i ly enter by means of pro tein
chan nels in the mem brane. The speed at which these
mol e cu les pass through the cell mem brane is aston ish ing.
If ener gy were need ed for water to enter and leave, as it
is for a great many other sub stan ces, then our bod ies'
ener gy lev els would be insuf fi cient to meet that need. For

103