Non-cellular life

Non-cellular life, also known as acellular life, is life that exists without a cellular structure for at least part of its life cycle.^[1] Historically, most definitions of life postulated that an organism must be composed of one or more cells,^[2] but, for some, this is no longer considered necessary, and modern criteria allow for forms of life based on other structural arrangements.^[3]^[4]^[5]

^ "What is Non-Cellular Life?". Wise Geek. Conjecture Corporation. 2009. Archived from the original on 21 January 2021. Retrieved 2 August 2009.^{[unreliable source?]}
^ "The 7 Characteristics of Life". infohost.nmt.edu. Archived from the original on 19 November 2016. Retrieved 26 January 2017.^{[better source needed]}
^ Benner SA (26 January 2017). "Defining Life". Astrobiology. 10 (10): 1021–1030. Bibcode:2010AsBio..10.1021B. doi:10.1089/ast.2010.0524. ISSN 1531-1074. PMC 3005285. PMID 21162682.
^ Trifonov E (2012). "Definition of Life: Navigation through Uncertainties" (PDF). Journal of Biomolecular Structure & Dynamics. 29 (4): 647–650. doi:10.1080/073911012010525017. PMID 22208269. S2CID 8616562. Archived from the original on 27 January 2012. Retrieved 27 January 2017 – via JBSD.{{cite journal}}: CS1 maint: unfit URL (link)
^ Ma W (26 September 2016). "The essence of life". Biology Direct. 11 (1): 49. doi:10.1186/s13062-016-0150-5. ISSN 1745-6150. PMC 5037589. PMID 27671203.

[:0-1] "What is Non-Cellular Life?". Wise Geek. Conjecture Corporation. 2009. Archived from the original on 21 January 2021. Retrieved 2 August 2009.^{[unreliable source?]}

[2] "The 7 Characteristics of Life". infohost.nmt.edu. Archived from the original on 19 November 2016. Retrieved 26 January 2017.^{[better source needed]}

[Benner_1021–1030-3] Benner SA (26 January 2017). "Defining Life". Astrobiology. 10 (10): 1021–1030. Bibcode:2010AsBio..10.1021B. doi:10.1089/ast.2010.0524. ISSN 1531-1074. PMC 3005285. PMID 21162682.

[:1-4] Trifonov E (2012). "Definition of Life: Navigation through Uncertainties" (PDF). Journal of Biomolecular Structure & Dynamics. 29 (4): 647–650. doi:10.1080/073911012010525017. PMID 22208269. S2CID 8616562. Archived from the original on 27 January 2012. Retrieved 27 January 2017 – via JBSD.{{cite journal}}: CS1 maint: unfit URL (link)

[:2-5] Ma W (26 September 2016). "The essence of life". Biology Direct. 11 (1): 49. doi:10.1186/s13062-016-0150-5. ISSN 1745-6150. PMC 5037589. PMID 27671203.

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