{"id":22229,"date":"2025-06-16T14:28:16","date_gmt":"2025-06-16T14:28:16","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=22229"},"modified":"2025-06-16T14:28:20","modified_gmt":"2025-06-16T14:28:20","slug":"how-many-molecules-of-nadh-are-produced-from-one-molecule-of-glucose-that-undergoes-glycolysis","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/how-many-molecules-of-nadh-are-produced-from-one-molecule-of-glucose-that-undergoes-glycolysis\/","title":{"rendered":"How many molecules of NADH are produced from one molecule of glucose that undergoes glycolysis"},"content":{"rendered":"\n<p>How many molecules of NADH are produced from one molecule of glucose that undergoes glycolysis, the linking step, and 2 turns of the Krebs cycle? Select one: a. 2 b. 4 c. 0 d. 10<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: d. 10<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation:<\/strong><\/h3>\n\n\n\n<p>When one molecule of <strong>glucose<\/strong> is completely oxidized through <strong>glycolysis<\/strong>, the <strong>linking step<\/strong>, and <strong>two turns of the Krebs cycle<\/strong>, a total of <strong>10 molecules of NADH<\/strong> are produced. Here\u2019s the breakdown:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Glycolysis (Occurs in the cytoplasm):<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1 glucose<\/strong> \u2192 <strong>2 pyruvate<\/strong><\/li>\n\n\n\n<li>Each glucose yields:\n<ul class=\"wp-block-list\">\n<li><strong>2 NADH<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Linking Step (Pyruvate to Acetyl-CoA, in the mitochondria):<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Each <strong>pyruvate (2 total)<\/strong> is converted to <strong>1 Acetyl-CoA<\/strong>, producing <strong>1 NADH<\/strong> per pyruvate.<\/li>\n\n\n\n<li>So for 2 pyruvate:\n<ul class=\"wp-block-list\">\n<li><strong>2 NADH<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Krebs Cycle (a.k.a. Citric Acid Cycle or TCA Cycle):<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Each <strong>Acetyl-CoA<\/strong> enters the cycle once. Since we have 2 Acetyl-CoA from 1 glucose, the cycle runs <strong>twice<\/strong>.<\/li>\n\n\n\n<li>Each turn of the Krebs cycle produces:\n<ul class=\"wp-block-list\">\n<li><strong>3 NADH<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Two turns produce:\n<ul class=\"wp-block-list\">\n<li><strong>3 NADH \u00d7 2 = 6 NADH<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Total NADH molecules from one glucose:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Glycolysis: <strong>2 NADH<\/strong><\/li>\n\n\n\n<li>Linking step: <strong>2 NADH<\/strong><\/li>\n\n\n\n<li>Krebs cycle: <strong>6 NADH<\/strong><\/li>\n\n\n\n<li><strong>Total: 2 + 2 + 6 = 10 NADH<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion:<\/strong><\/h3>\n\n\n\n<p>These <strong>10 NADH molecules<\/strong> are crucial because they carry high-energy electrons to the <strong>electron transport chain (ETC)<\/strong> in the mitochondria, where ATP is ultimately synthesized through oxidative phosphorylation. Thus, <strong>option d (10)<\/strong> is the correct answer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How many molecules of NADH are produced from one molecule of glucose that undergoes glycolysis, the linking step, and 2 turns of the Krebs cycle? Select one: a. 2 b. 4 c. 0 d. 10 The correct answer and explanation is: Correct Answer: d. 10 Explanation: When one molecule of glucose is completely oxidized through [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-22229","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=22229"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22229\/revisions"}],"predecessor-version":[{"id":22230,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/22229\/revisions\/22230"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=22229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=22229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=22229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}