Once animals die, the circulation system stops
working and cells are no longer being delivered
the blood or oxygen they need. At this point the
cells dont have the energy necessary to maintain
their biochemistry, so ions start to leak through
the membranes and systems began to break down
resulting in the cells death. Cell and tissue
materials begin to be decomposed and broken into
proteins and amino acids through a combination of
bacteria (either from inside the body - like in
our intestines or from the outside world) and the
bodys own internal enzymes. The bacteria and
enzymes will ultimately completely digest the
tissue, but other scavengers or insects may also
play a role in breaking those materials down.
Generally other organisms consume them. In
anaerobic environment, tissues oxidize, and in
ananaerobic environment, the fermenters and
sulfideoxidizers move in.
The proteins that
hold them together get digested, either by
bacteria or by other things.
Typically, animals are decomposed by bacteria
and othermicroorganisms. These other critters,
further down the food chain,rely on dead animals
as a food source.
Cellular tissues can be
broken down by endogenous (meaning from within the
creature itself) proteases. Proteases are enzymes
(proteins) that can attack and degrade other
proteins into smaller molecules, such as methane
(CH4), Ethanol, water, and other
smaller features. Also,bacteria and other
microbia participate in the breakdown of cellular
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