{"id":6491,"date":"2020-02-07T17:16:59","date_gmt":"2020-02-07T20:16:59","guid":{"rendered":"https:\/\/biologo.com.br\/bio\/?p=6491"},"modified":"2021-07-29T03:18:04","modified_gmt":"2021-07-29T06:18:04","slug":"as-origens-da-vida","status":"publish","type":"post","link":"https:\/\/biologo.com.br\/bio\/as-origens-da-vida\/","title":{"rendered":"As origens da vida"},"content":{"rendered":"<p><span style=\"font-size: 14pt; color: #000000;\"><span style=\"color: #3366ff;\"><strong>As origens da vida:<\/strong><\/span> Os muitos estudos cient\u00edficos da origem da vida, ocasionalmente tamb\u00e9m denominados evolu\u00e7\u00e3o qu\u00edmica, constituem um ramo pluridisciplinar da ci\u00eancia, que envolve, al\u00e9m da qu\u00edmica e da biologia, conhecimentos de f\u00edsica, astronomia e geologia.<\/span><\/p>\n<h2><span style=\"font-size: 24pt; color: #000000; font-family: 'courier new', courier, monospace;\"><strong>As origens da vida<\/strong><\/span><\/h2>\n<div class=\"jetpack-video-wrapper\"><iframe loading=\"lazy\" title=\"A Origem da Vida\" width=\"800\" height=\"600\" src=\"https:\/\/www.youtube.com\/embed\/V3mFt-i6B1w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<figure id=\"attachment_2070\" aria-describedby=\"caption-attachment-2070\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/biologo.com.br\/bio\/documentario-exobiologia\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2070\" data-permalink=\"https:\/\/biologo.com.br\/bio\/documentario-exobiologia\/exobiologia\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/exobiologia.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"exobiologia\" data-image-description=\"&lt;p&gt;Document\u00e1rio exobiologia. by ESO\/A. Fitzsimmons&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Document\u00e1rio exobiologia&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/exobiologia.jpg?fit=631%2C351&amp;ssl=1\" class=\"wp-image-2070 size-medium\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/exobiologia.jpg?resize=300%2C167&#038;ssl=1\" alt=\"Document\u00e1rio exobiologia\" width=\"300\" height=\"167\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/exobiologia.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/exobiologia.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-2070\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/biologo.com.br\/bio\/documentario-exobiologia\/\">Document\u00e1rio exobiologia<\/a><\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\"><span style=\"font-size: 18pt; font-family: georgia, palatino, serif;\"><strong>S<\/strong><\/span>eu objeto de interesse s\u00e3o os processos que teriam permitido aos elementos qu\u00edmicos que comp\u00f5em os organismos atingirem o grau de organiza\u00e7\u00e3o estrutural e funcional que caracteriza a mat\u00e9ria viva. <\/span><\/p>\n<p><span style=\"color: #000000;\">O fato de que estes processos requerem condi\u00e7\u00f5es determinadas, que s\u00f3 podem ocorrer em locais espec\u00edficos do universo, conecta o estudo da origem da vida \u00e0 <a href=\"https:\/\/biologo.com.br\/bio\/astrobiologia-a-vida-fora-da-terra\/\">Astrobiologia<\/a>.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 14pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/biologo.com.br\/bio\/formacao-da-terra\/\">Forma\u00e7\u00e3o da Terra<\/a><\/span><\/li>\n<li><span style=\"font-size: 14pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/biologo.com.br\/bio\/o-inicio-de-tudo\/\">O In\u00edcio de Tudo<\/a><\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">Os modelos propostos para a origem da vida s\u00e3o tentativas de recriar a hist\u00f3ria desta evolu\u00e7\u00e3o e \u00e9 importante destacar que n\u00e3o existe, na maioria das etapas deste processo, nenhum consenso entre os cientistas. <\/span><\/p>\n<p><span style=\"color: #000000;\">\u00c9 uma situa\u00e7\u00e3o inteiramente distinta da evolu\u00e7\u00e3o biol\u00f3gica onde o modelo evolucionista darwiniano encontra-se bem estabelecido h\u00e1 mais de um s\u00e9culo. Para melhor situar o problema \u00e9 indispens\u00e1vel em primeiro lugar examinar os n\u00edveis de organiza\u00e7\u00e3o inerentes \u00e0 mat\u00e9ria viva e ent\u00e3o discutir como os modelos propostos para a origem da vida tentam resolv\u00ea-los.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'courier new', courier, monospace; font-size: 14pt; color: #000000;\">De onde veio a vida?<\/span><\/strong><\/h3>\n<p><span style=\"color: #000000;\">O marco inicial do questionamento cient\u00edfico moderno a respeito da origem da vida, pode ser posicionado nos experimentos de Louis Pasteur, demonstrando que a forma\u00e7\u00e3o de organismos vivos a partir da mat\u00e9ria inanimada (gera\u00e7\u00e3o espont\u00e2nea), n\u00e3o poderia ser, ao contr\u00e1rio do que muitos supunham ent\u00e3o, um fen\u00f4meno trivial.<\/span><\/p>\n<figure id=\"attachment_1481\" aria-describedby=\"caption-attachment-1481\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/biologo.com.br\/bio\/o-surgimento-da-vida\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1481\" data-permalink=\"https:\/\/biologo.com.br\/bio\/o-surgimento-da-vida\/o-surgimento-da-vida-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/10\/o-surgimento-da-vida.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"o-surgimento-da-vida\" data-image-description=\"&lt;p&gt;O surgimento da vida. by NASA Goddard Space Flight Center&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;O Surgimento da Vida&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/10\/o-surgimento-da-vida.jpg?fit=631%2C351&amp;ssl=1\" class=\"wp-image-1481 size-medium\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/10\/o-surgimento-da-vida.jpg?resize=300%2C167&#038;ssl=1\" alt=\"O Surgimento da Vida\" width=\"300\" height=\"167\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/10\/o-surgimento-da-vida.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/10\/o-surgimento-da-vida.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-1481\" class=\"wp-caption-text\"><a href=\"https:\/\/biologo.com.br\/bio\/o-surgimento-da-vida\/\"><span style=\"font-size: 10pt; color: #0000ff;\">O Surgimento da Vida<\/span><\/a><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">A partir da\u00ed, os cientistas voltaram-se para a ideia de que a indaga\u00e7\u00e3o cient\u00edfica a respeito do surgimento da vida deveria ter como foco as condi\u00e7\u00f5es muito especiais exigidas para este processo, que possivelmente teriam existido apenas nos prim\u00f3rdios da hist\u00f3ria do planeta Terra.<\/span><\/p>\n<p><span style=\"color: #000000;\">Uma das primeiras abordagens do problema foi o questionamento acerca das caracter\u00edsticas dos primeiros seres vivos. Para sobreviver num ambiente primordial seria necess\u00e1rio que estes organismos primitivos fossem capazes de sintetizar seus pr\u00f3prios nutrientes (isto \u00e9, seriam autotr\u00f3ficos), ou dispusessem de uma fonte externa de compostos org\u00e2nicos (neste caso seriam heterotr\u00f3ficos). <\/span><\/p>\n<p><span style=\"color: #000000;\">A maior complexidade dos organismos autotr\u00f3ficos, que devem ser capazes tanto de produzir quanto de consumir seu alimento, sugeriu aos cientistas das primeiras d\u00e9cadas do s\u00e9culo XX que a Terra primitiva teria sido um ambiente rico em compostos org\u00e2nicos.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As origens da vida: Os muitos estudos cient\u00edficos da origem da vida, ocasionalmente tamb\u00e9m denominados evolu\u00e7\u00e3o qu\u00edmica, constituem um ramo<\/p>\n","protected":false},"author":1,"featured_media":6493,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[16,121],"tags":[],"class_list":["post-6491","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astrobiologia","category-evolucao"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Document\u00e1rio: As origens da vida: Evolu\u00e7\u00e3o e astrobiologia - Bi\u00f3logo<\/title>\n<meta name=\"description\" content=\"Os muitos estudos cient\u00edficos da origem da vida, ocasionalmente tamb\u00e9m denominados evolu\u00e7\u00e3o qu\u00edmica... 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