Page 118 - The Cell in 40 Topics

The Cell in 40 Topics

tally important role in the regulation of the pressure inside your veins.
It must not be forgotten that what is described here is just one of the
billions of complex communication processes continuing at every moment
inside our bodies.
At this point, a number of questions need answering: How is it that
unthinking, unconscious NO molecules so perfectly recognize systems that
even the world’s most esteemed academics have been unable to unravel?
How do they know when to go into action or stop, right down to the mil-
lisecond? As soon as they are produced, how can they forward their mes-
sages at high speed, to exactly the right sites and at exactly the right time, as
if they had received detailed instructions?
No doubt NO cannot perform all these wondrous tasks of its own ac-
cord. This molecule, like the millions of other molecules in nature, is the
work of a flawless Creation. And for thoughtful people, it is just one of the
proofs of God's infinite might and knowledge.
We will show them Our Signs on the horizon and within themselves
until it is clear to them that it is the truth. Is it not enough for your Lord
that He is a witness of everything? What! Are they in doubt about the
meeting with their Lord? What! Does He not encompass all things?
(Surah Fussilat, 53-54)

Figure 93.
The enzyme GC converts GTP,
energy-bearing molecules,
into cGMP.

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