{"id":87614,"date":"2023-02-10T19:30:00","date_gmt":"2023-02-10T22:30:00","guid":{"rendered":"https:\/\/vestibulares.estrategia.com\/portal\/?p=87614"},"modified":"2023-09-20T10:40:33","modified_gmt":"2023-09-20T13:40:33","slug":"difusao-simples-e-facilitada","status":"publish","type":"post","link":"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/","title":{"rendered":"Difus\u00e3o simples e facilitada: o que \u00e9, diferen\u00e7as, osmose"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Os processos de <span id=\"urn:enhancement-bf641b9a-3226-4941-86c7-9b9dd8fc45ad\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">difus&atilde;o simples<\/span> e facilitada acontecem na <span id=\"urn:enhancement-40f6636a-610b-4948-a681-93deb083440a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica das <span id=\"urn:enhancement-436bee09-ae5b-48f6-af7c-7c4d4d39af6a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/celulas\">c&eacute;lulas<\/span>, permitindo a troca de <span id=\"urn:enhancement-be6917ce-4971-44e6-ac26-8c517e525eb1\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncias<\/span> entre a parte externa e o meio citoplasm&aacute;tico. Assim, o <span id=\"urn:enhancement-393b6048-c3cf-470d-9df2-c5a539bcc241\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">organismo<\/span> pode regular as atividades metab&oacute;licas e bioqu&iacute;micas no <span id=\"urn:enhancement-e14f4edb-55e5-4653-af5a-266442d7d97a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">organismo<\/span>.<p class=\"wp-block-paragraph\">Ambos s&atilde;o formas de <span id=\"urn:enhancement-b7c42d12-4520-4abc-9f00-02fbc372ece9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/transporte-passivo\">transporte passivo<\/span> de compostos dentro do corpo humano e outros <span id=\"urn:enhancement-0751a2a7-5f82-433b-8cb1-6b2d2794e237\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">seres vivos<\/span>, como <span id=\"urn:enhancement-68f54335-54fe-4260-92e4-e7bfea5d34d0\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/animais\">animais<\/span> e <span id=\"urn:enhancement-8e21340a-1202-4a93-a7d3-1e33b6ae5710\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/vegetal\">plantas<\/span>. Leia este artigo e saiba mais sobre como esses processos acontecem, quais as caracter&iacute;sticas e a import&acirc;ncia deles para a manuten&ccedil;&atilde;o da sobreviv&ecirc;ncia.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Navegue pelo conte\u00fado<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/#Conceitos-de-difusao-simples-e-facilitada\" >Conceitos de difus&atilde;o simples e facilitada<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/#Diferencas-entre-difusao-simples-e-facilitada\" >Diferen&ccedil;as entre difus&atilde;o simples e facilitada<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/#Difusao-simples-e-facilitada-x-osmose\" >Difus&atilde;o simples e facilitada x osmose<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/#Importancia-da-difusao-simples-e-facilitada\" >Import&acirc;ncia da difus&atilde;o simples e facilitada<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/difusao-simples-e-facilitada\/#Estude-para-as-provas-com-a-Coruja\" >Estude para as provas com a Coruja!<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-conceitos-de-difusao-simples-e-facilitada\"><span class=\"ez-toc-section\" id=\"Conceitos-de-difusao-simples-e-facilitada\"><\/span>Conceitos de difus&atilde;o simples e facilitada<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Dentro do <span id=\"urn:enhancement-fe68eeb9-7070-4f8a-b283-4482a1a324ab\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">organismo<\/span>, o transporte de <span id=\"urn:enhancement-e6b16540-8fe7-401c-b1fc-e92baba93841\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncias<\/span> para dentro e fora das <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/celulas\/\" target=\"_blank\">c&eacute;lulas <\/a>pode acontecer de diferentes formas, que podem ou n&atilde;o gastar <span id=\"urn:enhancement-76380a6d-5062-414e-9d52-97af5b4ad2c6\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span>. Tudo isso depende da concentra&ccedil;&atilde;o daquela mol&eacute;cula dentro e fora da c&eacute;lula.&nbsp;<\/p><p class=\"wp-block-paragraph\">Para que o transporte aconte&ccedil;a sem gastos energ&eacute;ticos, &eacute; necess&aacute;rio que as mol&eacute;culas sejam transportadas da regi&atilde;o com maior concentra&ccedil;&atilde;o para o ambiente menos concentrado. De forma natural, o <span id=\"urn:enhancement-a5562de3-8140-4a70-b67b-68fb1b627066\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">organismo<\/span> tende ao <span id=\"urn:enhancement-d6a7b043-1b18-4f8e-a523-478fd864a219\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/equilibrios-quimicos\">equil&iacute;brio<\/span>, de forma que ambos os lados tenham a mesma concentra&ccedil;&atilde;o de determinada <span id=\"urn:enhancement-8ff17108-20f2-4f76-b4d8-15efa6d6bcf6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncia<\/span>.&nbsp;<\/p><p class=\"wp-block-paragraph\">Quando a movimenta&ccedil;&atilde;o das mol&eacute;culas precisa acontecer no sentido contr&aacute;rio, da zona menos para a mais concentrada, ocorre gasto de <span id=\"urn:enhancement-c73c8a3e-e227-41d4-a448-309b17b01b97\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> (ATPs). Nesse caso, trata-se de um <span id=\"urn:enhancement-59b77e66-906a-4e48-b78b-393d60c1ad99\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/transporte-ativo\">transporte ativo<\/span>, que acontece, por exemplo, nas <span id=\"urn:enhancement-548e5cd4-9b64-47a3-9008-baf2940daeda\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/celulas\">c&eacute;lulas<\/span> do <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/sistema-nervoso\/\" target=\"_blank\">sistema nervoso<\/a>.&nbsp;<\/p><h3 class=\"wp-block-heading\" id=\"h-difusao-simples\">Difus&atilde;o simples<\/h3><p class=\"wp-block-paragraph\">A <span id=\"urn:enhancement-47951673-4d61-4325-8c68-35fa8f0fe8e3\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">difus&atilde;o simples<\/span> &eacute; a transfer&ecirc;ncia de compostos que ocorre de maneira passiva, sempre da regi&atilde;o mais concentrada para a de menor concentra&ccedil;&atilde;o. Nesse caso, as mol&eacute;culas passam livremente pela <span id=\"urn:enhancement-e20a2a8d-fbe3-4548-babd-61b5aacbbfdc\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/bicamada-lipidica\">bicamada lip&iacute;dica<\/span> da <a href=\"https:\/\/www.youtube.com\/watch?v=HNx2KfHhSXg\" target=\"_blank\">membrana plasm&aacute;tica<\/a>.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/AvwM26j47yrTgZaiRjhzE_jcbEwzqf9luQYsZWuqq7Vkah33NaQi_6FkpxyXMWlgiriWYjfP2Hid1YnlnXUe_8RutLJ_6tyxzkXu-03zYG3HnP2fFxDusAYbpWtTWG_-bZva1-azTGHgjYFowKCQ62c\" alt=\"Difus&atilde;o simples\"><figcaption class=\"wp-element-caption\">Imagem: Adapta&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Na representa&ccedil;&atilde;o acima, observe que, ao longo do tempo, a regi&atilde;o exterior da <span id=\"urn:enhancement-2e66bfad-4b81-4e35-bb30-27cd24aebdf5\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> fica menos concentrada, ao passo que a parte interna fica mais concentrada. A tend&ecirc;ncia &eacute; a equival&ecirc;ncia de concentra&ccedil;&atilde;o.&nbsp;<\/p><p class=\"wp-block-paragraph\">Note que os hex&aacute;gonos em azul, que representam as mol&eacute;culas, podem atravessar livremente a configura&ccedil;&atilde;o membranosa. Isso s&oacute; acontece porque a <span id=\"urn:enhancement-ea3d9098-82f3-47b1-a8d4-130b43b8a978\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica &eacute; perme&aacute;vel &agrave; <span id=\"urn:enhancement-24978a21-3e6d-4270-9039-780c184b2be9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncia<\/span> qu&iacute;mica em quest&atilde;o, enquanto que o <span id=\"urn:enhancement-cdb27806-84ad-4649-95b6-1e417f954eca\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/transporte-passivo\">transporte passivo<\/span> &eacute; impulsionado pela diferen&ccedil;a de concentra&ccedil;&atilde;o, que pode ser chamada de gradiente de concentra&ccedil;&atilde;o.<\/p><p class=\"wp-block-paragraph\">Quanto maior for a diferen&ccedil;a entre as concentra&ccedil;&otilde;es de <span id=\"urn:enhancement-3557bca2-e841-4ae8-bcf8-1a64705fae1b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/soluto\">soluto<\/span> nos dois ambientes, mais rapidamente acontecer&aacute; o processo de <span id=\"urn:enhancement-ecb20cae-88bb-4327-8167-3d62b62d5a1a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">difus&atilde;o simples<\/span>. Ou seja, quanto maior o desequil&iacute;brio, maior a tend&ecirc;ncia do <span id=\"urn:enhancement-24d82ff1-88bb-4835-a428-2cea45a37cf5\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/organismos\">organismo<\/span> em equilibrar a distribui&ccedil;&atilde;o de mol&eacute;culas.<\/p><h3 class=\"wp-block-heading\" id=\"h-difusao-facilitada\">Difus&atilde;o facilitada<\/h3><p class=\"wp-block-paragraph\">No caso da <span id=\"urn:enhancement-408af69f-ceaf-4c16-a4ce-901959e9d335\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-facilitada\">difus&atilde;o facilitada<\/span> tamb&eacute;m n&atilde;o &eacute; necess&aacute;rio o uso de <span id=\"urn:enhancement-36fe5023-62b1-42b9-a8dd-7c8dd15e663a\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span>, assim como o gradiente de concentra&ccedil;&atilde;o ainda &eacute; respeitado, ou seja, ocorre da zona mais concentrada para o meio menos concentrado.&nbsp;<\/p><p class=\"wp-block-paragraph\">A caracter&iacute;stica diferente, nesse caso, &eacute; a necessidade de <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/biologia\/proteinas\/\" target=\"_blank\">prote&iacute;nas<\/a>. S&atilde;o <span id=\"urn:enhancement-8a02be5f-fa8d-4ae1-89c8-9635f9b4b53d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/permeases\">permeases<\/span>, estruturas proteicas que se posicionam na <span id=\"urn:enhancement-2ec3c7b1-fa1e-4743-8ece-8fed19b15c72\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/bicamada-lipidica\">bicamada lip&iacute;dica<\/span> formando um canal para a passagem das mol&eacute;culas.&nbsp;<\/p><p class=\"wp-block-paragraph\">Essas <span id=\"urn:enhancement-f1fa84a1-a610-4ef2-a6da-0203e55d8937\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> s&atilde;o importantes porque a <span id=\"urn:enhancement-0ef0911a-37ae-4caf-88f9-948a495ac0a7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-facilitada\">difus&atilde;o facilitada<\/span> acontece com <span id=\"urn:enhancement-8d857bef-7953-454c-ae79-9636c3cb453b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncias<\/span> que n&atilde;o s&atilde;o perme&aacute;veis na <span id=\"urn:enhancement-5f82ae38-32f5-43a5-9c8e-516f7d746457\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica. Assim, n&atilde;o podem simplesmente atravessar o envolt&oacute;rio e &eacute; essencial a presen&ccedil;a das <span id=\"urn:enhancement-e7beecad-12cd-41e0-94da-1dea9c39c222\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/permeases\">permeases<\/span>.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/z15i5w_kJPCME7QfccU-BAqEof9p1VRZJqOJv-B6tfUIk3UWnnpv9Mqkq3S0iInbgCmyfL35XNgB9BF6rCgrTZQJNRP3pjjUotcDQ9AYkfEiS_HnVRysBhRSUZvTRqPhAfMW4EuX56RmDlr72BiD--g\" alt=\"Difus&atilde;o simples e facilitada\"><figcaption class=\"wp-element-caption\">Imagem: Adapta&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">No esquema acima, existem dois tipos de <span id=\"urn:enhancement-ab8fb08c-b697-49ac-ba7f-b7255597901b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/permeases\">permeases<\/span>. O canal proteico conecta um ambiente ao outro diretamente, como um cano que possibilita a passagem das mol&eacute;culas entre eles. &Eacute; a primeira representa&ccedil;&atilde;o da esquerda para a direita.&nbsp;<\/p><p class=\"wp-block-paragraph\">Depois, os tr&ecirc;s desenhos de <span id=\"urn:enhancement-5dd26a1c-9da1-4907-bedd-2205a5c0d1d4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteases\">proteases<\/span> da direita representam a mesma estrutura proteica. Nesse caso, a <span id=\"urn:enhancement-5b8f4539-1a21-4d0d-b26a-3e6b8f465d92\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;na<\/span> recebe a <span id=\"urn:enhancement-ba2b81ab-82f4-4197-b649-05d29e5ed177\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">subst&acirc;ncia<\/span>, muda de conforma&ccedil;&atilde;o e entrega a mol&eacute;cula para o outro ambiente. &Eacute; como um carregador, um carrinho de transporte, por isso s&atilde;o chamadas de <span id=\"urn:enhancement-06c79868-4e90-49a0-b391-adbfde03e593\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> carreadoras.<\/p><p class=\"wp-block-paragraph\">Nesse sentido, a velocidade do <span id=\"urn:enhancement-b01cf1e7-99e8-490a-8e22-5aa293795ffa\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/transporte-passivo\">transporte passivo<\/span> &eacute; dependente do n&uacute;mero de <span id=\"urn:enhancement-1f9e8f35-83c3-41b5-99e8-ed8f165730e3\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteases\">proteases<\/span> presentes na <span id=\"urn:enhancement-763c40d1-e396-45ce-b113-43f31e01a7de\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica da c&eacute;lula. Quanto mais <span id=\"urn:enhancement-fb8381bb-1abf-458d-b2c2-9e9ec7e5e3a3\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> transportadoras, mais rapidamente as mol&eacute;culas podem ser movimentadas do meio mais concentrado para o de menor concentra&ccedil;&atilde;o.<\/p><h2 class=\"wp-block-heading\" id=\"h-diferencas-entre-difusao-simples-e-facilitada\"><span class=\"ez-toc-section\" id=\"Diferencas-entre-difusao-simples-e-facilitada\"><\/span>Diferen&ccedil;as entre difus&atilde;o simples e facilitada<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong><span id=\"urn:enhancement-e708bc2e-0d1b-48a8-af24-a521a0f69773\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">Difus&atilde;o simples<\/span><\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong><span id=\"urn:enhancement-45b8cba2-a659-4efd-bc99-f98025870482\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-facilitada\">Difus&atilde;o facilitada<\/span><\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Da regi&atilde;o de mais concentra&ccedil;&atilde;o para a menos concentrada.<\/td><td class=\"has-text-align-center\" data-align=\"center\">Da regi&atilde;o de mais concentra&ccedil;&atilde;o para a menos concentrada.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">N&atilde;o precisa de <span id=\"urn:enhancement-a8dea430-0476-4673-905a-662f369ef374\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> de carregamento.<\/td><td class=\"has-text-align-center\" data-align=\"center\">Necessidade de <span id=\"urn:enhancement-862cc197-cbf7-4320-9f0a-0c1c967b5687\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteases\">proteases<\/span>.<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><span id=\"urn:enhancement-e23bc2dc-2c96-46e2-a32f-b79df88300ed\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">Subst&acirc;ncia<\/span> perme&aacute;vel<\/td><td class=\"has-text-align-center\" data-align=\"center\"><span id=\"urn:enhancement-f0bc24a8-6b02-4c8a-848f-dfd199e6ba61\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/substancia\">Subst&acirc;ncia<\/span> n&atilde;o perme&aacute;vel, por isso necessita de estruturas de transporte<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">&Eacute; mais lenta, depende apenas do gradiente de concentra&ccedil;&atilde;o.<\/td><td class=\"has-text-align-center\" data-align=\"center\">Tende a ser mais r&aacute;pida, pois a velocidade &eacute; modulada pelo n&uacute;mero de <span id=\"urn:enhancement-8461db24-fe4c-448f-b712-5a8100325678\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> encontradas.<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\" id=\"h-difusao-simples-e-facilitada-x-osmose\"><span class=\"ez-toc-section\" id=\"Difusao-simples-e-facilitada-x-osmose\"><\/span>Difus&atilde;o simples e facilitada x osmose<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">A osmose tamb&eacute;m &eacute; um tipo de <span id=\"urn:enhancement-1fccf8b4-057e-428f-b691-88afd63f9146\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/transporte-passivo\">transporte passivo<\/span>, mas que ocorre pela movimenta&ccedil;&atilde;o da &aacute;gua. Nesse caso, o solvente atravessa a <span id=\"urn:enhancement-08c87446-c26b-4c3b-b1f7-31f5f8042095\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica da regi&atilde;o hipert&ocirc;nica para a hipot&ocirc;nica. Ou seja, no sentido de equilibrar os ambientes, da menor concentra&ccedil;&atilde;o para a maior concentra&ccedil;&atilde;o.&nbsp;<\/p><p class=\"wp-block-paragraph\">Para que isso aconte&ccedil;a, os dois meios devem estar separados por uma <span id=\"urn:enhancement-4412a914-70af-450a-ab46-89758f5a068f\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> semiperme&aacute;vel. &Eacute; o que acontece com a <span id=\"urn:enhancement-0ec9ebd6-164b-49c3-9f72-494b01260258\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/membrana\">membrana<\/span> plasm&aacute;tica, que apresenta uma <span id=\"urn:enhancement-d79d2435-43e4-4b36-a345-c218178f75bb\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/permeabilidade-seletiva\">permeabilidade seletiva<\/span> para diferentes mol&eacute;culas.&nbsp;<\/p><p class=\"wp-block-paragraph\">Lembre-se que a sa&iacute;da da &aacute;gua de um meio, torna-o mais concentrado. Por exemplo, se 10 g de sal est&atilde;o dissolvidos em 1 L de &aacute;gua, a perda de 500 mL de &aacute;gua, tornaria o ambiente mais concentrado, com uma concentra&ccedil;&atilde;o equivalente a 20 g de sal por litro de &aacute;gua.<\/p><p class=\"wp-block-paragraph\">Ao mesmo tempo, a chegada de mais &aacute;gua faz com que o meio fique mais concentrado. Se 1 litro de &aacute;gua tem a concentra&ccedil;&atilde;o de 5 g\/L, a chegada de mais 1 litro de &aacute;gua faz com que 5 g fiquem dissolvidos em 2 l de &aacute;gua, ent&atilde;o a concentra&ccedil;&atilde;o ser&aacute; 2,5 g\/L.<\/p><p class=\"wp-block-paragraph\">Perceba que a <span id=\"urn:enhancement-3f1657cd-4705-445b-a095-685eb3019bd6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">difus&atilde;o simples<\/span> e facilitada s&atilde;o diferentes da osmose. As difus&otilde;es s&atilde;o passivas, mas dependem da movimenta&ccedil;&atilde;o do <span id=\"urn:enhancement-0d92606d-41dc-4b93-bca7-074c102f9bda\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/soluto\">soluto<\/span> em meio as membranas. Por outro lado, a osmose est&aacute; relacionada com o transporte da &aacute;gua. Apesar disso, todas trabalham no sentido de equilibrar as concentra&ccedil;&otilde;es.<\/p><h2 class=\"wp-block-heading\" id=\"h-importancia-da-difusao-simples-e-facilitada\"><span class=\"ez-toc-section\" id=\"Importancia-da-difusao-simples-e-facilitada\"><\/span>Import&acirc;ncia da difus&atilde;o simples e facilitada<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">A <span id=\"urn:enhancement-c532f30c-5798-4592-9bd0-332410476ad9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/difusao-simples\">difus&atilde;o simples<\/span> e facilitada s&atilde;o essenciais para a sobreviv&ecirc;ncia dos <span id=\"urn:enhancement-2eb0d44b-285e-4811-8c34-050b059f2fbb\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/animais\">animais<\/span> e <span id=\"urn:enhancement-a4caf850-bb03-4018-af6d-41d4e0f2bb51\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/vegetal\">plantas<\/span>. Por exemplo, a <span id=\"urn:enhancement-d10b6956-e7ee-41a1-b00e-1efd0c6a67bb\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenacao\">oxigena&ccedil;&atilde;o<\/span> do corpo humano depende desses transportes passivos para ocorrer. Quando o ar que inspiramos chega aos pulm&otilde;es, a concentra&ccedil;&atilde;o de oxig&ecirc;nio no pulm&atilde;o &eacute; baixa, ent&atilde;o o oxig&ecirc;nio vai do ar em dire&ccedil;&atilde;o aos alv&eacute;olos, oxigenando o sangue.&nbsp;<\/p><p class=\"wp-block-paragraph\">Ao mesmo tempo, o g&aacute;s carb&ocirc;nico fica concentrado nos pulm&otilde;es e, com isso, as mol&eacute;culas de CO<sub>2<\/sub> s&atilde;o eliminadas para o ar que acabou de entrar. Ent&atilde;o, quando expiramos o ar dos pulm&otilde;es, esse composto t&oacute;xico &eacute; eliminado pelas vias respirat&oacute;rias.<\/p><p class=\"wp-block-paragraph\">Outro exemplo est&aacute; relacionado com o sistema digest&oacute;rio. Depois que um indiv&iacute;duo se alimenta, os nutrientes s&atilde;o extra&iacute;dos, processados e transformados em <span id=\"urn:enhancement-fc468637-e82b-4fe2-8d85-c224b0bb41a9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/glicose\">glicose<\/span> e outras mol&eacute;culas que podem ser absorvidas pelas <span id=\"urn:enhancement-0599a6d9-f2ce-40ec-a35a-6dc6c18fb2d2\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/celulas\">c&eacute;lulas<\/span>.&nbsp;<\/p><p class=\"wp-block-paragraph\">Com isso, a concentra&ccedil;&atilde;o de <span id=\"urn:enhancement-15322b0b-03b7-4839-8941-56d6fcf80dca\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/glicose\">glicose<\/span> fora das <span id=\"urn:enhancement-53f72602-efc6-4ed4-a4b1-8a80233de578\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/celulas\">c&eacute;lulas<\/span> aumenta. Diante disso, <span id=\"urn:enhancement-a925ed17-bf39-4385-976e-17112353e69d\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/proteinas\">prote&iacute;nas<\/span> carreadoras possibilitam a passagem das mol&eacute;culas de <span id=\"urn:enhancement-02ea5f5d-71da-4dba-8f6b-00593bb95d2a\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/glicose\">glicose<\/span> do meio externo para dentro das <span id=\"urn:enhancement-c3eacaaa-5fa1-4a44-bbfb-6ae5540e0422\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/celulas\">c&eacute;lulas<\/span>. Isso &eacute; essencial porque permite a forma&ccedil;&atilde;o da <span id=\"urn:enhancement-2f38cc90-5611-48db-b8ef-cdbf1836a71f\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> necess&aacute;ria para a sobreviv&ecirc;ncia humana.<\/p><h2 class=\"wp-block-heading\" id=\"h-estude-para-as-provas-com-a-coruja\"><span class=\"ez-toc-section\" id=\"Estude-para-as-provas-com-a-Coruja\"><\/span>Estude para as provas com a Coruja!<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Nos pacotes do <span id=\"urn:enhancement-afbde744-7cc6-49c4-9e8a-8fd6a7e8e88c\" class=\"textannotation disambiguated wl-organization\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/estrategia_vestibulares\">Estrat&eacute;gia Vestibulares<\/span>, voc&ecirc; tem acesso a materiais interativos. Com essa ferramenta voc&ecirc; pode ler o conte&uacute;do, estud&aacute;-lo, grifar e comentar. No momento da revis&atilde;o, todas as suas ideias e destaques estar&atilde;o dispon&iacute;veis, facilitando a lembran&ccedil;a do aprendizado. A Coruja te proporciona tudo isso alinhado com aulas did&aacute;ticas, que te d&atilde;o a base de <span id=\"urn:enhancement-f92a2e78-0eec-41bb-b55c-10644fecede6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/conhecimento\">conhecimento<\/span> necess&aacute;rio em todas as disciplinas. Clique no banner e saiba mais!<\/p><p class=\"wp-block-paragraph\"><a id=\"cta\" class=\"cta-imagem\" href=\"https:\/\/vestibulares.estrategia.com\/cursos\/\" target=\"blank\">\n                <img decoding=\"async\" width=\"100%\" src=\"https:\/\/vestibulares.estrategia.com\/portal\/wp-content\/uploads\/2021\/12\/EV4.jpg\" alt=\"CTA - Estrat\u00e9gia Vestibulares 4\" title=\"CTA - Estrat\u00e9gia Vestibulares 4\">\n        <\/a>\n\n\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"Os processos de difus&atilde;o simples e facilitada acontecem na membrana plasm&aacute;tica das c&eacute;lulas, permitindo a troca de subst&acirc;ncias&hellip;\n","protected":false},"author":23,"featured_media":87615,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[],"class_list":["post-87614","post","type-post","status-publish","format-standard","has-post-thumbnail","category-biologia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Difus\u00e3o simples e facilitada: o que \u00e9, diferen\u00e7as, osmose<\/title>\n<meta name=\"description\" content=\"Saiba mais sobre como a difus\u00e3o simples e facilitada acontecem, quais as caracter\u00edsticas e a import\u00e2ncia para a sobreviv\u00eancia.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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