Page 93 - The Miracle in the Cell Membrane

Harun Yahya (Adnan Oktar)

these func tions, their shape chan ges, and some times they
require ener gy to pass sub stan ces through the cell mem -
brane. There are no holes in the cell mem brane itself.
Therefore, water, pro tein, nucle ic acid and cer tain small
mol e cu les una ble to pass direct ly through the cell mem -
bra ne's lipid dou ble layer all enter the cell by means of
these trans port pro teins.
Due to their three-dimen sion al amino acid strings,
these car ri er pro teins can eas i ly con struct a nar row pas -
sage. Substances of a par tic u lar size are thus able to enter
that space and pass through the chan nel. Size alone is not
enough to be able to pass through, how e ver: the select ive
cell mem brane allows only those sub stan ces the cell
needs to be
taken inside.

Cell exterior
Recognition
Cell membrane
Proteins
Antibody
Cell interior recognizing These pro -
microphage
teins func tion
Cells like the immune system's T cells employ like molec u lar
proteins to determine whether a cell belongs to
the body. In this way, the T cell identifies foreign flags and sign -
substances and emits signals for the necessary posts. Rod-like
measures to be taken.
pro tru sions
gen er al ly con -
sist ing of sugar on these pro teins extend out side the cell
mem brane, allow ing cells to recog nize and make con nec -
tions with one anoth er. Because these pro teins, leu ko cyte

91