{"id":20890,"date":"2025-06-14T20:23:54","date_gmt":"2025-06-14T20:23:54","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=20890"},"modified":"2025-06-14T20:23:59","modified_gmt":"2025-06-14T20:23:59","slug":"all-of-the-following-would-be-considered-a-tertiary-structure-of-a-protein-except","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/all-of-the-following-would-be-considered-a-tertiary-structure-of-a-protein-except\/","title":{"rendered":"All of the following would be considered a tertiary structure of a protein EXCEPT"},"content":{"rendered":"\n<p>All of the following would be considered a tertiary structure of a protein EXCEPT: A. transmembrane proteins B. globular proteins C. cooperative interaction of multiple subunits D. fibrous proteins E. all of the above<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\"><strong>The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n<p><strong>Correct Answer: C. cooperative interaction of multiple subunits<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>Proteins have several levels of structural organization:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Primary structure<\/strong> \u2013 the sequence of amino acids in the polypeptide chain.<\/li>\n\n\n\n<li><strong>Secondary structure<\/strong> \u2013 local folding patterns such as <strong>\u03b1-helices<\/strong> and <strong>\u03b2-sheets<\/strong>, stabilized by hydrogen bonds.<\/li>\n\n\n\n<li><strong>Tertiary structure<\/strong> \u2013 the <strong>overall 3D shape of a single polypeptide chain<\/strong>, resulting from interactions among side chains (R-groups), including hydrogen bonding, ionic interactions, disulfide bridges, and hydrophobic packing.<\/li>\n\n\n\n<li><strong>Quaternary structure<\/strong> \u2013 formed when <strong>multiple polypeptide chains (subunits)<\/strong> come together and function as one unit. This level involves <strong>cooperative interactions<\/strong> among these subunits.<\/li>\n<\/ol>\n\n\n\n<p>Now, let\u2019s examine each option:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A. Transmembrane proteins<\/strong>: These are proteins that span a membrane and have a defined 3D structure within the membrane, typically part of their <strong>tertiary structure<\/strong>.<\/li>\n\n\n\n<li><strong>B. Globular proteins<\/strong>: These are compact, water-soluble proteins with a complex tertiary structure, often involved in dynamic functions like enzymatic activity.<\/li>\n\n\n\n<li><strong>C. Cooperative interaction of multiple subunits<\/strong>: This describes a <strong>quaternary structure<\/strong>, not tertiary. Hemoglobin is a classic example where multiple subunits (each with its own tertiary structure) work together, and their interaction leads to cooperativity in oxygen binding.<\/li>\n\n\n\n<li><strong>D. Fibrous proteins<\/strong>: These have elongated shapes and structural roles, with a defined tertiary structure (e.g., collagen or keratin).<\/li>\n\n\n\n<li><strong>E. All of the above<\/strong>: Incorrect because <strong>C is not a tertiary structure<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conclusion:<\/h3>\n\n\n\n<p>The <strong>cooperative interaction of multiple subunits<\/strong> is characteristic of the <strong>quaternary structure<\/strong>, not the tertiary. Therefore, the correct answer is <strong>C<\/strong>, as it does <strong>not<\/strong> represent a tertiary structure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>All of the following would be considered a tertiary structure of a protein EXCEPT: A. transmembrane proteins B. globular proteins C. cooperative interaction of multiple subunits D. fibrous proteins E. all of the above The correct answer and explanation is: Correct Answer: C. cooperative interaction of multiple subunits Explanation: Proteins have several levels of structural [&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-20890","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/20890","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=20890"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/20890\/revisions"}],"predecessor-version":[{"id":20891,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/20890\/revisions\/20891"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=20890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=20890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=20890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}