{"id":206297,"date":"2025-03-27T17:05:57","date_gmt":"2025-03-27T17:05:57","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=206297"},"modified":"2025-03-27T17:06:59","modified_gmt":"2025-03-27T17:06:59","slug":"substances-to-which-amino-acid-carbon-skeletons-may-be-degraded-include","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/27\/substances-to-which-amino-acid-carbon-skeletons-may-be-degraded-include\/","title":{"rendered":"Substances to which amino acid carbon \u201cskeletons\u201d may be degraded include"},"content":{"rendered":"\n

.Substances to which amino acid carbon \u201cskeletons\u201d may be degraded include<\/p>\n\n\n\n

a.acetyl CoA<\/p>\n\n\n\n

b.citrate<\/p>\n\n\n\n

c.succinate<\/p>\n\n\n\n

d.more than one correct response<\/p>\n\n\n\n

e.no correct response<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is:<\/p>\n\n\n\n

d. More than one correct response<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

Amino acid carbon skeletons can be degraded into multiple metabolic intermediates, depending on the specific amino acid. These intermediates feed into various metabolic pathways, including the citric acid (Krebs) cycle<\/strong> and fatty acid synthesis<\/strong>.<\/p>\n\n\n\n

1. Acetyl CoA (Correct)<\/strong><\/h4>\n\n\n\n
    \n
  • Certain amino acids, such as leucine, isoleucine, lysine, phenylalanine, tryptophan, and tyrosine<\/strong>, can be converted into acetyl CoA.<\/li>\n\n\n\n
  • Acetyl CoA plays a crucial role in energy production<\/strong> (ATP synthesis via oxidative phosphorylation) and lipid biosynthesis<\/strong>.<\/li>\n\n\n\n
  • It can enter the Krebs cycle<\/strong> or be used for ketone body formation<\/strong>.<\/li>\n<\/ul>\n\n\n\n

    2. Citrate (Incorrect)<\/strong><\/h4>\n\n\n\n
      \n
    • Citrate is an intermediate in the Krebs cycle, but amino acids do not directly degrade into citrate.<\/li>\n\n\n\n
    • Instead, acetyl CoA can combine with oxaloacetate to form citrate, making citrate a secondary product rather than a direct degradation product of amino acids.<\/li>\n<\/ul>\n\n\n\n

      3. Succinate (Correct)<\/strong><\/h4>\n\n\n\n
        \n
      • Amino acids such as methionine, isoleucine, and valine<\/strong> can be converted into propionyl CoA<\/strong>, which is further converted into succinyl CoA<\/strong>, an intermediate in the Krebs cycle.<\/li>\n\n\n\n
      • Succinyl CoA is important for ATP production<\/strong> and gluconeogenesis<\/strong>.<\/li>\n<\/ul>\n\n\n\n

        Since both acetyl CoA and succinate<\/strong> are correct, the best answer is “d. More than one correct response.”<\/strong><\/p>\n\n\n\n

        Importance of Amino Acid Degradation<\/strong><\/h3>\n\n\n\n
          \n
        • This process helps generate energy when glucose levels are low.<\/li>\n\n\n\n
        • It allows for the production of metabolic intermediates that support various cellular functions.<\/li>\n\n\n\n
        • Some amino acids are glucogenic, ketogenic, or both, depending on which intermediates they produce.<\/li>\n<\/ul>\n\n\n\n
          \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

          .Substances to which amino acid carbon \u201cskeletons\u201d may be degraded include a.acetyl CoA b.citrate c.succinate d.more than one correct response e.no correct response The correct answer and explanation is : The correct answer is: d. More than one correct response Explanation: Amino acid carbon skeletons can be degraded into multiple metabolic intermediates, 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-206297","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/206297","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=206297"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/206297\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=206297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=206297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=206297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}