Most of us know that photosynthesis is a
biochemical process that plants, algae, and some bacteria use to create
food and release oxygen to the earth’s atmosphere. We also know that
chlorophyll is the molecule that drives the process. We may not know
that there are two separate chlorophyll groups in structures called
thylakoids which convert light into electrical energy. In all of this
there are two reactions, one dependent on light and one independent of
In the light-dependent reaction sunlight enters the plant and energizes
the chlorophyll. The chlorophyll splits water into hydrogen and oxygen
and feeds electrons into nearby molecules. The oxygen escapes and the
hydrogen is used later. The freed electrons make a molecule called ATP
which fuels cellular functions. With more sunlight a molecule called
NADP is produced.
In the light-independent reaction NADP combines with the freed hydrogen
to make a larger molecule called NADPH. These components, NADPH, ATP,
and an enzyme called RubisCO, create sugars and other carbohydrates
using carbon dioxide and water in a complex chemical process called the
Chlorophyll operates with light in the blue and red part of the
spectrum, reflecting green light (which is why trees are green). The
energies of the light are exactly the right values to allow the
Calvin-Benson cycle to work. Carbon is taken from the atmosphere and
forms the foundation of all food chains on earth.
This superficial explanation of photosynthesis is designed to make just
one point--this process is so complex and so highly designed that to
think it could come about by chance alone takes a profound faith in
chance--a faith unwarranted by our own experience. Design and
engineering of this high level of sophistication is not something that
will happen by chance. It is a reflection of the wisdom of the Creator,
who used some incredibly complex processes to establish life on this
Reference: Cribsheet #10, Seed
magazine, May 30, 2007.
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Does God Exist?, JulAug09.