{"id":2733,"date":"2020-01-15T17:35:39","date_gmt":"2020-01-15T16:35:39","guid":{"rendered":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/?p=2733"},"modified":"2020-01-31T13:36:02","modified_gmt":"2020-01-31T12:36:02","slug":"hh","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/batxillerat\/hh\/","title":{"rendered":"Experimentant amb la qu\u00edmica de la vida"},"content":{"rendered":"<p><a href=\"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58-1024x1024.jpeg\" alt=\"\" width=\"524\" height=\"524\" class=\"aligncenter size-large wp-image-2736\" srcset=\"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58-1024x1024.jpeg 1024w, https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58-150x150.jpeg 150w, https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58-300x300.jpeg 300w, https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58-768x768.jpeg 768w, https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58.jpeg 1800w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\" \/><\/a><br \/>\nA la mat\u00e8ria de Biologia de 1r de batxillerat hem estudiat els processos d&#8217;osmosi i de desnaturalitzaci\u00f3 de prote\u00efnes a partir d&#8217;un ou. <!--more--><\/p>\n<p>En submergir l&#8217;ou durant un cert temps en \u00e0cid ac\u00e8tic (vinagre) i aigua destil\u00b7lada aconseguim que el carbonat c\u00e0lcic de la seva closca es descomposi a causa de l&#8217;acci\u00f3 de l&#8217;\u00e0cid i, com a conseq\u00fc\u00e8ncia, aquesta es despr\u00e8n i s&#8217;allibera CO2 en forma de petites bombolles. Seguidament l&#8217;alb\u00famina (prote\u00efna) de la clara de l&#8217;ou es desnaturalitza pel canvi de pH a causa de l&#8217;acidesa del medi i aix\u00f2 comporta que l&#8217;ou es torni el\u00e0stic. Finalment, donat que la soluci\u00f3 \u00e9s hipot\u00f2nica respecte l&#8217;interior de l&#8217;ou, per osmosi entra aigua dins d&#8217;aquest i li provoca un augment de volum. Hem experimentat tres fen\u00f2mens en un sol experiment! A continuaci\u00f3 una selecci\u00f3 de les millors imatges fetes per alumnes que il\u00b7lustren aquest proc\u00e9s:<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-content\/uploads\/usu10\/2020\/01\/4F6329B8-2E0E-4934-934B-23EC3EC4FC58.jpeg\"><\/a><br \/>\nA la mat\u00e8ria de Biologia de 1r de batxillerat hem estudiat els processos d&#8217;osmosi i de desnaturalitzaci\u00f3 de prote\u00efnes a partir d&#8217;un ou. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[8,29],"tags":[],"class_list":["post-2733","post","type-post","status-publish","format-standard","hentry","category-batxillerat","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/posts\/2733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/comments?post=2733"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/posts\/2733\/revisions"}],"predecessor-version":[{"id":2737,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/posts\/2733\/revisions\/2737"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/media?parent=2733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/categories?post=2733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-barcelona-congres\/wp-json\/wp\/v2\/tags?post=2733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}