Page 54 - The Miraculous Machine that Works for an Entire Lifetime: Enzyme

Harun Yahya

consciousness or an intelligence. It is impossible for it to give rise to

phenomena and functions that operate in any conscious manner. Allah
is the Creator of all the astonishing and miraculous beauty on Earth.
Allah is the Creator of everything and He is Guardian over everything.
The keys of the heavens and earth belong to Him. It is those who reject
Allah's signs who are the losers. (Surat az-Zumar: 62-63)

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E Enzymes' Control Mechanisms
The thousands of enzymes inside a cell are in constant competition
with one another for substrates. Each one is a part of a chain reaction or
a link in a metabolic pathway; and different enzymes will compete for
the same substrate. So complex is this system that keen organization is
essential to determine the timing of each reaction and the speed at
which it occurs.
For that reason, the sequence, number and timing of reactions are
maintained under meticulous control. So well ordered is the catalytic
activity of enzymes that the products emerging from their reactions are
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sufficient to meet all the cell's needs. There must be constant order if
enzymes are to work together and carry out the requisite processes at
such high speeds. All the stages are thus subject to strict control.
Synthesizing reactions take place when a new product is needed in the
cell, and destructive ones occur when molecules need to be eliminated.
Generally speaking, enzymes are synthesized at low rates unless the
cell has a particular need. If demand rises, however, new enzymes are
synthesized at great speed.
Enzymes are also adapted to the equilibrium determined for them.
The enzyme lipase, for example, breaks down fat, but also has the job
of combining glycerin and fatty acids. Which reaction will take place is
of great importance, because as energy is expended in one of the reac-
tions performed, it is supplied by another. Any reaction requiring ener-
gy needs to occur at the same time as those producing energy, or else it

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