For each turn of the Krebs cycle:
a) How many ATP are produced?
b) How many NADH are produced?
c) How many FADH, are produced?
d) How many molecules of carbon dioxide are produced?<\/p>\n\n\n\n
The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n a) ATP Produced<\/strong>: 1 ATP (or GTP, depending on the cell type) The Krebs cycle<\/strong>, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a crucial metabolic pathway that occurs in the mitochondrial matrix. It plays a key role in cellular respiration by oxidizing acetyl-CoA to generate high-energy molecules used in ATP production.<\/p>\n\n\n\n Each turn of the Krebs cycle begins when a two-carbon acetyl-CoA molecule combines with a four-carbon oxaloacetate to form a six-carbon compound, citrate. Through a series of enzyme-catalyzed reactions, citrate is progressively broken down, regenerating oxaloacetate and producing important energy-carrying molecules.<\/p>\n\n\n\n Since one glucose molecule generates two acetyl-CoA molecules<\/strong>, the Krebs cycle turns twice per glucose<\/strong>, effectively doubling these values for total ATP yield.<\/p>\n","protected":false},"excerpt":{"rendered":" For each turn of the Krebs cycle:a) How many ATP are produced?b) How many NADH are produced?c) How many FADH, are produced?d) How many molecules of carbon dioxide are produced? The correct answer and explanation is : Answers for Each Turn of the Krebs Cycle: a) ATP Produced: 1 ATP (or GTP, depending on the […]<\/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-204364","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204364","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=204364"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204364\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=204364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=204364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=204364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Answers for Each Turn of the Krebs Cycle:<\/h3>\n\n\n\n
b) NADH Produced<\/strong>: 3 NADH
c) FADH\u2082 Produced<\/strong>: 1 FADH\u2082
d) CO\u2082 Produced<\/strong>: 2 CO\u2082<\/p>\n\n\n\n
\n\n\n\nExplanation:<\/h3>\n\n\n\n
\n
ATP (or GTP in some cells) is generated through substrate-level phosphorylation<\/strong> in the conversion of succinyl-CoA to succinate. This step directly yields 1 ATP per turn<\/strong> of the cycle.<\/li>\n\n\n\n
During the oxidation of isocitrate, \u03b1-ketoglutarate, and malate, electrons are transferred to NAD\u207a<\/strong>, forming 3 NADH per turn<\/strong>. These NADH molecules will later contribute to ATP generation through the electron transport chain.<\/li>\n\n\n\n
During the conversion of succinate to fumarate, electrons are transferred to FAD<\/strong>, forming 1 FADH\u2082 per turn<\/strong>. Like NADH, FADH\u2082 donates electrons to the electron transport chain for ATP synthesis.<\/li>\n\n\n\n
Decarboxylation reactions occur during the conversion of isocitrate to \u03b1-ketoglutarate and \u03b1-ketoglutarate to succinyl-CoA, releasing 2 CO\u2082 molecules per turn<\/strong> as waste products of glucose metabolism.<\/li>\n<\/ol>\n\n\n\n