{"id":183726,"date":"2025-01-17T02:57:02","date_gmt":"2025-01-17T02:57:02","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=183726"},"modified":"2025-01-17T02:57:04","modified_gmt":"2025-01-17T02:57:04","slug":"q3-9-for-which-of-the-following-is-potential-energy-decreasing","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/17\/q3-9-for-which-of-the-following-is-potential-energy-decreasing\/","title":{"rendered":"Q3.9. For which of the following is potential energy DECREASING"},"content":{"rendered":"\n<p>Q3.9. For which of the following is potential energy DECREASING? (Hint: Click here to see an overview of the ETC.) Protons moving from the mitochondrial matrix to the intermembrane space O ADP gaining a phosphate group to become a molecule of ATP Two protons being moved closer toward each other O Electrons moving from Complex IV to O\u00c3\u00a2\u00e2\u20ac\u0161\u00e2\u20ac\u0161 None<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>To determine where <strong>potential energy is decreasing<\/strong>, let&#8217;s analyze each scenario in the context of potential energy and biological processes:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Protons moving from the mitochondrial matrix to the intermembrane space<\/strong>:\n<ul class=\"wp-block-list\">\n<li>This is an active process where protons are pumped against their concentration gradient during the electron transport chain (ETC). Moving protons against the gradient <strong>increases potential energy<\/strong>, so this is not the correct answer.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>ADP gaining a phosphate group to become a molecule of ATP<\/strong>:\n<ul class=\"wp-block-list\">\n<li>The formation of ATP from ADP and inorganic phosphate is an <strong>endergonic process<\/strong>, meaning it requires energy and increases potential energy. This is also not the correct answer.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Two protons being moved closer toward each other<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Protons are positively charged, and like charges repel each other. Bringing them closer together increases the repulsive electrostatic force, thus increasing potential energy. This is not correct either.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Electrons moving from Complex IV to O\u2082<\/strong>:\n<ul class=\"wp-block-list\">\n<li>In the ETC, electrons move from high-energy states to lower-energy states as they pass through complexes and eventually combine with oxygen. When electrons move to oxygen (a highly electronegative molecule), they lose potential energy. This is the correct answer.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Correct Answer:<\/h3>\n\n\n\n<p><strong>Electrons moving from Complex IV to O\u2082<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Q3.9. For which of the following is potential energy DECREASING? (Hint: Click here to see an overview of the ETC.) Protons moving from the mitochondrial matrix to the intermembrane space O ADP gaining a phosphate group to become a molecule of ATP Two protons being moved closer toward each other O Electrons moving from Complex [&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-183726","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/183726","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=183726"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/183726\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=183726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=183726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=183726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}