Between Necessity and Probability: Searching for the by Radu Popa

By Radu Popa

Systematically explores the early origins and simple definition of existence. Investigates the key theories of the origins of lifestyles in mild of recent examine with the purpose of distinguishing among the mandatory and the not obligatory and among deterministic and random affects within the emergence of what we name ‘life.’ Treats and perspectives existence as a cosmic phenomenon whose emergence and driver will be considered independently from its Earth-bound ordinary background. Synthesizes all of the primary life-related advancements in a finished state of affairs, and makes the argument that knowing existence in its broadest context calls for a material-independent point of view that identifies its crucial fingerprints

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Extra resources for Between Necessity and Probability: Searching for the Definition and Origin of Life (Advances in Astrobiology and Biogeophysics)

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Basic structure of membranes made from phospholipids in the living world Fig. 2. Diversity of cell walls in the living world. 1 The Make-up of Life’s Boundaries 43 Archaea group of microorganisms are layers of lipid ethers reinforced with proteins. Lipid esters plus proteins make membranes in bacteria and Eukaryotes (see Fig. 1). A cell wall is also added in most Prokaryotes, resulting in very complex envelopes (see Fig. 2). A capsule made of insoluble polysaccharides (see Fig. 3) and an S-layer made of proteins arranged in a surface mosaic is also frequently present in many Prokaryotes (see Fig.

Membranes from the Fig. 1. Basic structure of membranes made from phospholipids in the living world Fig. 2. Diversity of cell walls in the living world. 1 The Make-up of Life’s Boundaries 43 Archaea group of microorganisms are layers of lipid ethers reinforced with proteins. Lipid esters plus proteins make membranes in bacteria and Eukaryotes (see Fig. 1). A cell wall is also added in most Prokaryotes, resulting in very complex envelopes (see Fig. 2). A capsule made of insoluble polysaccharides (see Fig.

6 billion years of evolution (which is very likely), an approach based purely on simplicity would never provide a satisfactory answer. Three types of chemical components have been used in models of primeval boundaries: • • • amphipatic molecules (Deamer 1986), inorganic chemicals (Russell and Hall 1997), polypeptides (Fox and Dose 1977). Other early forms of spatial confinement could have been represented by pores within rocks with their entrances blocked by natural colloids (Turian 1999), high viscosity fluids, or fluids trapped within capillary spaces.

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