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As of today, there are no answers for the actual mechanism of [[abiogenesis]]. There are several hypotheses that advocate that the first cell or protocell could have been formed out of a primordial [[RNA world]].<ref>Schrum, J. P., Zhu, T. F., & Szostak, J. W. (2010). The Origins of Cellular Life. Cold Spring Harbor Perspectives in Biology, 2(9), a002212. http://doi.org/10.1101/cshperspect.a002212</ref><ref>Alberts B, Johnson A, Lewis J, et al. Molecular Biology of the Cell. 4th edition. New York: Garland Science; 2002. The RNA World and the Origins of Life. Available from: https://www.ncbi.nlm.nih.gov/books/NBK26876/</ref> | As of today, there are no answers for the actual mechanism of [[abiogenesis]]. There are several hypotheses that advocate that the first cell or protocell could have been formed out of a primordial [[RNA world]].<ref>Schrum, J. P., Zhu, T. F., & Szostak, J. W. (2010). The Origins of Cellular Life. Cold Spring Harbor Perspectives in Biology, 2(9), a002212. http://doi.org/10.1101/cshperspect.a002212</ref><ref>Alberts B, Johnson A, Lewis J, et al. Molecular Biology of the Cell. 4th edition. New York: Garland Science; 2002. The RNA World and the Origins of Life. Available from: https://www.ncbi.nlm.nih.gov/books/NBK26876/</ref> | ||
=== What is the source of energy for a cell? === | === What is the source of energy for a cell? === | ||
− | The [[energy]] of the cell comes from an [[organelle]] called [[mitochondrion]], which produces [[adenosine triphosphate|ATP]] by [[glycolysis]]. ATP breaks down to [[adenosine diphosphate|ADP]] by [[hydrolysis | + | The [[energy]] of the cell comes from an [[organelle]] called [[mitochondrion]], which produces [[adenosine triphosphate|ATP]] by [[glycolysis]]. ATP breaks down to [[adenosine diphosphate|ADP]] by [[hydrolysis], losing a phosphate group and thus releasing and energy. |
− | + | ATP+H2O→ADP+Pi+Energy | |
− | ATP+ | ||
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== References == | == References == | ||
<references/> | <references/> |