Definition of life

Attila Pusztai pusztai at HUBI.ABC.HU
Tue Feb 8 14:50:49 EST 1994

Richard Streng wrote:

> I think, a living system consists of two parts:
>   I) A distinct information which consists all instructions necessary
>      to multiply itself.
>  II) An envelop for that information which was produced under the
>      directives of that information (by growth or assembly or whatever)
>      and which aids as a vehicle and as a tool to perform the multiplication
>      of the information and of at least initial stages of new envelops.
> All other criteria follow secundarily. They are epiphenomena and are
> included in the above definition. E.g. ontogeny, selfdestruction and death
> of the envelop (the >soma< in earth biology) are under the control of the
> information.
> Even mutability is included because of a balanced degree of repair of
> inevitable or provoked errors during the copying process of the information.

What about circulating red blood cells, without nucleus? Aren't they alive?

Attila Pusztai
pusztai at
pusztai at
Godollo Univ.Agric.Sci.

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