{"id":188874,"date":"2025-02-07T17:01:41","date_gmt":"2025-02-07T17:01:41","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=188874"},"modified":"2025-02-07T17:01:44","modified_gmt":"2025-02-07T17:01:44","slug":"label-the-parts-of-the-below-lipid-molecule","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/07\/label-the-parts-of-the-below-lipid-molecule\/","title":{"rendered":"Label the parts of the below lipid molecule"},"content":{"rendered":"\n

Label the parts of the below lipid molecule. Is this a saturated or unsaturated lipid? (3 pts) H H H H H H H H H H\u2014 \u0421 . I C-C-C-C-C 1 1 H H H H H C-C-C-C-H I 1 1 1 H H H H 4. Draw a lipid structure. Properly label the polar and non-polar ends of the representation of a lipid below: (3 pts) 5. Arrange the following fatty acids in order from lowest melting point to highest: myristic acid, arachidonic acid, linolenic acid, stearic acid, oleic acid. You can find the structures in our libre text or in-class homework activity. What do the highest have in common? What do the lowest have in common? (3 pts)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

It looks like I can’t access the image directly. However, I can still guide you through the answers to your questions.<\/p>\n\n\n\n

Question 3: Label the parts of the lipid molecule<\/h3>\n\n\n\n

In the lipid structure you provided, based on the notation and chemical groups involved:<\/p>\n\n\n\n

    \n
  1. Hydrogen atoms (H)<\/strong> – These are attached to the carbon chain, which is typical in fatty acids.<\/li>\n\n\n\n
  2. Carbon atoms (C)<\/strong> – These form the backbone of the molecule. Each carbon (except for the ones at the ends) is attached to two hydrogens, making the carbon chain.<\/li>\n\n\n\n
  3. The notation “C-C-C-C-C” refers to a chain of carbon atoms bound together, with hydrogens filling the rest of the bonds.<\/li>\n\n\n\n
  4. Functional Group<\/strong> – If the structure you are referencing is a fatty acid, the functional group at the end (COOH) will define whether the lipid is saturated or unsaturated.<\/li>\n<\/ol>\n\n\n\n

    Saturated vs Unsaturated:<\/strong><\/p>\n\n\n\n

      \n
    • If all the carbon atoms in the fatty acid chain are bonded to the maximum number of hydrogen atoms (no double bonds between carbons), it is a saturated<\/strong> fatty acid.<\/li>\n\n\n\n
    • If there are double bonds<\/strong> between the carbon atoms (causing “kinks” in the chain), the fatty acid is unsaturated<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      Given this description, the molecule in question would likely be saturated<\/strong> if it does not have any double bonds.<\/p>\n\n\n\n

      Question 4: Draw a lipid structure and label the polar and non-polar ends<\/h3>\n\n\n\n

      In a lipid molecule, like a phospholipid<\/strong>:<\/p>\n\n\n\n

        \n
      1. Polar head<\/strong>: The head contains a hydrophilic (water-loving) group, usually a phosphate group<\/strong>.<\/li>\n\n\n\n
      2. Non-polar tail<\/strong>: The tails are made of fatty acid chains<\/strong> that are hydrophobic (water-fearing).<\/li>\n<\/ol>\n\n\n\n
          \n
        • Polar head<\/strong>: This is the part of the molecule that interacts with water (hydrophilic).<\/li>\n\n\n\n
        • Non-polar tail<\/strong>: These are the fatty acid chains, which are hydrophobic and avoid water.<\/li>\n<\/ul>\n\n\n\n

          Question 5: Arrange fatty acids by melting point<\/h3>\n\n\n\n

          Here\u2019s the order of fatty acids from lowest melting point to highest<\/strong>:<\/p>\n\n\n\n

            \n
          • Arachidonic acid<\/strong> (most unsaturated, lowest melting point)<\/li>\n\n\n\n
          • Linolenic acid<\/strong> (unsaturated)<\/li>\n\n\n\n
          • Oleic acid<\/strong> (monounsaturated)<\/li>\n\n\n\n
          • Myristic acid<\/strong> (saturated)<\/li>\n\n\n\n
          • Stearic acid<\/strong> (most saturated, highest melting point)<\/li>\n<\/ul>\n\n\n\n

            What do the highest melting point fatty acids have in common?<\/strong>
            The highest melting point fatty acids are saturated<\/strong>. Saturated fatty acids have no double bonds, allowing them to pack tightly together, which results in higher melting points.<\/p>\n\n\n\n

            What do the lowest melting point fatty acids have in common?<\/strong>
            The lowest melting point fatty acids are unsaturated<\/strong>. Double bonds in these fatty acids create kinks in the carbon chain, preventing tight packing and lowering the melting point.<\/p>\n\n\n\n

            Would you like more detailed explanations or clarifications on any of the points?<\/p>\n","protected":false},"excerpt":{"rendered":"

            Label the parts of the below lipid molecule. Is this a saturated or unsaturated lipid? (3 pts) H H H H H H H H H H\u2014 \u0421 . I C-C-C-C-C 1 1 H H H H H C-C-C-C-H I 1 1 1 H H H H 4. Draw a lipid structure. Properly label 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-188874","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188874","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=188874"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188874\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=188874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=188874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=188874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}