Results 121 to 130 of about 8,714 (205)

Europa: Prospects for an ocean and exobiological implications [PDF]

open access: yes
As far as we know, Earth is the only planet in our solar system that supports life. It is natural, therefore, that our understanding of life as a planetary phenomenon is based upon Earth-like planets.
Mills, Thomas M.   +3 more
core   +1 more source

Mathematical Model of \u3cem\u3eChlorella minutissima\u3c/em\u3e UTEX2341 Growth and Lipid Production Under Photoheterotrophic Fermentation Conditions [PDF]

open access: yes, 2011
To reduce the cost of algal biomass production, mathematical model was developed for the first time to describe microalgae growth, lipid production and glycerin consumption under photoheterotrophic conditions based on logistic, Luedeking–Piret and ...
Hristova, Krassimira R.   +5 more
core   +1 more source

Growth of candidate phyla radiation bacteria in groundwater incubations reveals widespread adaptations to oxic conditions

open access: yesMicrobiome
Background The candidate phyla radiation (CPR) comprises a widespread but poorly understood group of bacteria with limited cultured representatives, largely due to their metabolic dependencies on microbial hosts.
Ekaterine Gabashvili   +4 more
doaj   +1 more source

Fundamental Molecules of Life are Pigments which Arose and Evolved to Dissipate the Solar Spectrum

open access: yes, 2014
The driving force behind the origin and evolution of life has been the thermodynamic imperative of increasing the entropy production of the biosphere through increasing the global solar photon dissipation rate.
Michaelian, Karo, Simeonov, Aleksandar
core   +2 more sources

A phylogenetic approach to the early evolution of autotrophy: the case of the reverse TCA and the reductive acetyl-CoA pathways [PDF]

open access: yes, 2014
In recent decades, a number of hypotheses on the autotrophic origin of life have been presented. These proposals invoke the emergence of reaction networks leading from CO or CO2 to the organic molecules required for life.
Antonio Lazcano   +4 more
core   +1 more source

Autotrophy in iron-oxidizing, acidophilic bacteria [PDF]

open access: yes
Gram positive, moderately thermophilic, acidophilic bacteria which can oxidize mineral sulphides are likely to be used industrially in mineral processing. In comparison with the Gram negative Thiobacillus ferrooxidans which is currently used commercially, the best- characterized moderate thermophiles were shown to require enhanced concentrations of CO2
openaire  

Methanococcus thermolithotrophicus, a novel thermophilic lithotrophic methanogen [PDF]

open access: yes, 1982
Huber, Harald   +4 more
core   +1 more source

Comparative biochemistry of CO2 fixation and the evolution of autotrophy.

open access: yesInternational microbiology : the official journal of the Spanish Society for Microbiology, 1999
Carbon dioxide fixation is a polyphyletic trait that has evolved in widely separated prokaryotic branches. The three principal CO2-assimilation pathways are (i) the reductive pentose-phosphate cycle, i.e. the Calvin-Benson cycle; (ii) the reductive citric acid (or Arnon) cycle; and (iii) the net synthesis of acetyl-CoA from CO/CO2, or Wood pathway ...
Peretó, Juli   +3 more
openaire   +2 more sources

Metabolic rewiring and biomass redistribution enable optimized mixotrophic growth in Chlamydomonas. [PDF]

open access: yesProc Natl Acad Sci U S A
Koley S   +12 more
europepmc   +1 more source

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