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| Science Forum Index » Bio Evolution Forum » Support for the Catabolic anabolic hypothesis... |
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| Author |
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| Tom Hendricks... |
 Posted: Sat Oct 10, 2009 6:54 pm |
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Guest
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Catabolic reactions are those in which nutrients and cell parts are
broken down to salvage their components and or generate energy,
usually in the form of ATP.
But the energy released from ATP can be used for many varied things:
anabolic reactions, mechanical work, active transport of molecules.
For ATP to be used for such varied anabolic processes, they must be
separate enough from the catabolic processes to alter, change, and
evolve to fit all those variety of purposes.
On the other hand the catabolic reactions are also separate and can
evolve beyond ATP production to: the digestion of nutrients by
breaking down molecules; the protection of the cell by breaking down
of non-self molecules; and to excreting out waste, by breaking down
and removing waste molecules.
Therefore anabolic processes are free to use ATP in many ways not
limited by the catabolic processes that make the ATP. And Catabolic
processes are separate enough to alter, change, or evolve too.
Note that the basic metabolic pathways in most organisms are
essentially the same. This suggests that the anabolic uses of ATP are
more varied
than the catabolic processes that make the ATP. |
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