  The complex physicochemical structures and chemical reactions in living
organism have some common features: (1) The life processes take place in the
cytosol in the cells, which, from a physicochemical point of view is an
emulsion of biomolecules in a dilute aqueous suspension. (2) All living systems
are homochiral with respect to the units of amino acids and carbohydrates, but
(some) proteins are chiral unstable in the cytosol. (3) And living organism are
mortal. These three common features together give a prerequisite for the
prebiotic self-assembly at the start of the Abiogenesis. Here we argue , that
it all together indicates, that the prebiotic self-assembly of structures and
reactions took place in a more saline environment, whereby the homochirality of
proteins not only could be obtained, but also preserved. A more saline
environment for the prebiotic self-assembly of organic molecules and
establishment of biochemical reactions could have been the hydrothermal vents.
