{"id":216185,"date":"2025-05-18T20:45:29","date_gmt":"2025-05-18T20:45:29","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=216185"},"modified":"2025-05-19T08:16:27","modified_gmt":"2025-05-19T08:16:27","slug":"which-of-the-following-statements-is-correct-about-passive-facilitated-diffusion-select-all-that-apply","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/18\/which-of-the-following-statements-is-correct-about-passive-facilitated-diffusion-select-all-that-apply\/","title":{"rendered":"Which of the following statements is correct about passive facilitated diffusion"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Which of the following statements is correct about passive facilitated diffusion? (select all that apply)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A. It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient).<br>B. It requires a transport protein.<br>C. It requires an expenditure of energy by the cell.<br>D. It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient).<br>E. It involves movement of molecules up a concentration gradient and requires a transport protein.<br>F. None<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The correct answers are:<br><strong>B. It requires a transport protein.<\/strong><br><strong>D. It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient).<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation (300+ words):<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Passive facilitated diffusion<\/strong> is a type of <strong>passive transport<\/strong> that enables certain molecules\u2014usually those that are large, polar, or charged\u2014to move across the cell membrane with the help of <strong>transport proteins<\/strong>. Unlike simple diffusion, where substances move freely across the lipid bilayer, facilitated diffusion requires a specific <strong>membrane protein<\/strong>, such as a channel protein or carrier protein, to assist in transporting the substance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A key characteristic of passive processes\u2014including facilitated diffusion\u2014is that <strong>no energy (ATP) is required<\/strong>. This is because the movement of molecules occurs <strong>down their concentration gradient<\/strong>, which means from an area of <strong>higher concentration to an area of lower concentration<\/strong> (Option D). This is in contrast to active transport, where substances move <strong>against their concentration gradient<\/strong> and <strong>require energy<\/strong> input (ATP).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s examine the provided options:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A. Incorrect.<\/strong> This describes active transport, not passive facilitated diffusion. Movement <strong>from low to high concentration<\/strong> requires energy.<\/li>\n\n\n\n<li><strong>B. Correct.<\/strong> Facilitated diffusion requires a <strong>transport protein<\/strong>. These proteins provide a path for molecules like glucose or ions (e.g., Na\u207a, Cl\u207b) to pass through the otherwise impermeable phospholipid bilayer.<\/li>\n\n\n\n<li><strong>C. Incorrect.<\/strong> Energy is <strong>not<\/strong> used in passive facilitated diffusion. The cell relies on the natural kinetic energy of molecules moving down their concentration gradient.<\/li>\n\n\n\n<li><strong>D. Correct.<\/strong> This defines the process of <strong>diffusion<\/strong>, including <strong>facilitated diffusion<\/strong>\u2014molecules move <strong>down<\/strong> the gradient.<\/li>\n\n\n\n<li><strong>E. Incorrect.<\/strong> This statement confuses active transport with facilitated diffusion. Moving <strong>up<\/strong> the gradient requires energy and a protein, which is <strong>active transport<\/strong>, not <strong>passive<\/strong>.<\/li>\n\n\n\n<li><strong>F. Incorrect.<\/strong> Because options B and D are correct.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In summary, <strong>passive facilitated diffusion<\/strong> involves the <strong>movement of molecules down their concentration gradient<\/strong>, requires a <strong>transport protein<\/strong>, and <strong>does not require energy<\/strong>. It is a vital process that allows cells to efficiently absorb and utilize important nutrients and ions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements is correct about passive facilitated diffusion? (select all that apply) A. It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient).B. It requires a transport protein.C. It requires an expenditure of energy by the cell.D. It [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-216185","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/216185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=216185"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/216185\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=216185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=216185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=216185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}