{"id":13355,"date":"2026-05-11T14:16:01","date_gmt":"2026-05-11T14:16:01","guid":{"rendered":"https:\/\/www.vedprep.com\/exams\/?p=13355"},"modified":"2026-05-11T14:16:01","modified_gmt":"2026-05-11T14:16:01","slug":"oxygen-transport","status":"publish","type":"post","link":"https:\/\/www.vedprep.com\/exams\/gate\/oxygen-transport\/","title":{"rendered":"Oxygen transport (Hemoglobin, Myoglobin) For GATE: A Comprehensive guide for 2026"},"content":{"rendered":"<p>Oxygen transport by hemoglobin and myoglobin is a crucial process in the human body, enabling the efficient delivery of oxygen to tissues. Understanding this mechanism is essential for GATE aspirants to excel in biochemistry and molecular biology sections.<\/p>\n<h2>4.1 Syllabus and Textbook Coverage<\/h2>\n<p>This topic falls under the <strong>Molecular Biology and Genetics <\/strong>unit of the official CSIR NET syllabus. It is also relevant to <em>IIT JAM Biotechnology <\/em>and <em>CUET PG Biochemistry <\/em>curricula.<\/p>\n<p>The transport of oxygen by <em>hemoglobin <\/em>and <em>myoglobin <\/em>is a crucial concept in biochemistry. <em>Hemoglobin <\/em>is a protein in red blood cells that carries oxygen from the lungs to the body&#8217;s tissues, while <em>myoglobin <\/em>stores oxygen in muscles.<\/p>\n<p>Standard textbooks that cover this topic include:<\/p>\n<ul>\n<li><strong>Lehninger Principles of Biochemistry <\/strong>by David L. Nelson and Michael M. Cox<\/li>\n<li><strong>Biochemistry <\/strong>by Bruce Alberts, et al. (also known as <em>Alberts<\/em>)<\/li>\n<\/ul>\n<p>These textbooks provide a comprehensive explanation of oxygen transport,<em>hemoglobin<\/em>, and <em>myoglobin<\/em>, including their structure, function, and regulation.<\/p>\n<h2>Oxygen Transport Mechanisms: Hemoglobin and Myoglobin<\/h2>\n<p>Hemoglobin and myoglobin are two crucial proteins involved in oxygen transport in living organisms. <strong>Hemoglobin <\/strong>is a <em>tetrameric protein<\/em>, consisting of four subunits, each containing a\u00a0<code>heme group<\/code>. The heme group is a prosthetic group that plays a central role in binding oxygen. This unique structure allows hemoglobin to bind and transport oxygen efficiently.<\/p>\n<p>In contrast, <strong>myoglobin <\/strong>is a <em>monomeric protein <\/em>with a single heme group. Myoglobin is primarily found in muscle tissue and serves as an oxygen reservoir. Both hemoglobin and myoglobin play vital roles in maintaining adequate oxygen supply to tissues. Their structures and functions are critical for understanding oxygen transport mechanisms.<\/p>\n<p>The process of oxygen transport is essential for cellular respiration and energy production. Oxygen transport (Hemoglobin, Myoglobin) For GATE aspirants, it is essential to understand the binding and release of oxygen by these proteins. The affinity of hemoglobin and myoglobin for oxygen is influenced by various factors, including pH, temperature, and the presence of other molecules. Understanding these factors is crucial for comprehending the complex mechanisms of oxygen transport.<\/p>\n<h2>Oxygen transport (Hemoglobin, Myoglobin) For GATE<\/h2>\n<p>Amyoglobin and hemoglobin are oxygen-binding proteins in the human body. The oxygen-binding curve for <strong>hemoglobin <\/strong>is sigmoidal in shape, indicating cooperative binding. This sigmoidal curve is a result of the four subunits of hemoglobin interacting with each other.<\/p>\n<p><em>Myoglobin<\/em>, on the other hand, has a higher affinity for oxygen than hemoglobin due to its hyperbolic oxygen-binding curve. This is because myoglobin has only one subunit and does not exhibit cooperative binding.<\/p>\n<p>A question arises: What is the effect of increasing CO2 levels on the oxygen-binding affinity of hemoglobin? The <strong>Bohr effect <\/strong>describes this phenomenon, where an increase in CO2 levels leads to a decrease in oxygen-binding affinity of hemoglobin.<\/p>\n<p>Consider a multiple-choice question: At high CO2 concentrations,<\/p>\n<ul>\n<li>A. Myoglobin binds more oxygen than hemoglobin.<\/li>\n<li>B. Hemoglobin binds more oxygen than myoglobin.<\/li>\n<li>C. Hemoglobin&#8217;s affinity for oxygen increases.<\/li>\n<li>D. Hemoglobin&#8217;s affinity for oxygen decreases.<\/li>\n<\/ul>\n<p>The correct answer is <strong>D<\/strong>. According to the Bohr effect, an increase in CO2 levels decreases hemoglobin&#8217;s affinity for oxygen, facilitating oxygen release to tissues.<\/p>\n<h2>Common Misconceptions: Oxygen Transport and Hemoglobin<\/h2>\n<p>Students often misunderstand the structure and function of hemoglobin, a crucial protein in oxygen transport. A common misconception is that hemoglobin is a single protein. However, hemoglobin is actually a <strong>tetrameric complex<\/strong>, composed of four polypeptide chains (globins) and four <em>heme<\/em>groups. This complex structure allows hemoglobin to bind four oxygen molecules.<\/p>\n<p>Another misconception is that myoglobin is a precursor to hemoglobin. Myoglobin is a separate protein found in muscles, responsible for storing oxygen for immediate use. It has a single polypeptide chain and one <em>heme <\/em>group. The structures and functions of myoglobin and hemoglobin are distinct, and myoglobin does not convert into hemoglobin.<\/p>\n<p>The oxygen binding affinity of hemoglobin is also often misunderstood. Students may assume that the affinity is constant, but it actually changes depending on the oxygen binding status. This phenomenon is known as <strong>cooperativity<\/strong>. When one oxygen molecule binds to a <em>heme<\/em>group, it increases the affinity of the other<em>heme<\/em>groups for oxygen, allowing hemoglobin to efficiently transport oxygen from the lungs to tissues. This process is essential for maintaining proper oxygen levels in the body during <code>Oxygen transport (Hemoglobin, Myoglobin) For GATE<\/code> and other related topics in biology.<\/p>\n<h2>Real-World Applications: Oxygen Transport in Medicine<\/h2>\n<h2>Oxygen transport (Hemoglobin, Myoglobin) For GATE<\/h2>\n<p>Effective exam strategy is crucial for GATE aspirants to master the topic of oxygen transport, specifically focusing on hemoglobin and myoglobin. Understanding the molecular mechanisms of oxygen transport is essential, as it forms the basis of various biochemical processes.<strong>Oxygen transport (Hemoglobin, Myoglobin) For GATE <\/strong>requires a thorough grasp of the structure-function relationships of these proteins.<\/p>\n<p>Aspirants should prioritize practicing CSIR NET and IIT JAM-style questions to improve their problem-solving skills and familiarize themselves with the exam pattern. This will enable them to identify frequently tested subtopics and develop a strategic approach to tackling complex problems. Key subtopics include the cooperative binding of oxygen to hemoglobin, the Bohr effect, and the role of myoglobin in oxygen storage.<\/p>\n<p>To build a strong foundation, aspirants should review key concepts from biochemistry and molecular biology textbooks, focusing on the structure and function of hemoglobin and myoglobin. <em>VedPrep <\/em>offers expert guidance and comprehensive study materials to support GATE preparation. By leveraging these resources, aspirants can reinforce their understanding of oxygen transport mechanisms and develop the skills needed to excel in the exam.<\/p>\n<p>A well-structured study plan should include regular practice, review of key concepts, and analysis of performance. Aspirants can benefit from <a href=\"https:\/\/www.vedprep.com\/\"><code>VedPrep's<\/code><\/a> targeted study modules and practice tests to assess their knowledge and identify areas for improvement. By adopting a strategic approach and utilizing expert resources, GATE aspirants can confidently tackle questions related to oxygen transport and achieve success in the exam.<\/p>\n<h2>Oxygen Transport and Hemoglobin: Key Concepts for GATE<\/h2>\n<p>Oxygen transport in the human body is a critical function facilitated by proteins such as <strong>hemoglobin <\/strong>and <strong>myoglobin<\/strong>. Hemoglobin, found in red blood cells, is responsible for transporting oxygen from the lungs to peripheral tissues. The oxygen-binding curve of hemoglobin is sigmoidal, indicating cooperative binding of oxygen. This cooperativity is quantitatively described by the <strong>Hill coefficient<\/strong>, a measure of how the binding of one oxygen molecule affects the binding of subsequent oxygen molecules.<\/p>\n<p>The oxygen-binding curve of hemoglobin is also influenced by <em>pH <\/em>and <em>CO2 <\/em>levels. A decrease in pH (increase in acidity) and an increase in CO2 levels, such as those occurring in metabolically active tissues, decrease hemoglobin&#8217;s affinity for oxygen, facilitating oxygen release. This phenomenon is known as the <strong>Bohr effect<\/strong>. In contrast, myoglobin, found in muscle cells, has a high affinity for oxygen and stores it for use during intense muscle activity. Myoglobin&#8217;s structure and function are distinct from those of hemoglobin, with a single polypeptide chain and a higher oxygen-binding affinity.<\/p>\n<p>Understanding the mechanisms of oxygen transport by hemoglobin and myoglobin is essential for various <code>biological and medical applications<\/code>. For <a href=\"https:\/\/gate2026.iitg.ac.in\/\" rel=\"nofollow noopener\" target=\"_blank\">GATE<\/a>, it is crucial to grasp these concepts, including the Hill coefficient and the Bohr effect, to tackle questions related to oxygen transport and <strong>Oxygen transport (Hemoglobin, Myoglobin) For GATE <\/strong>efficiently. Key differences between hemoglobin and myoglobin are summarized below:<\/p>\n<ul>\n<li>Hemoglobin: Four polypeptide chains, cooperative oxygen binding, transports oxygen from lungs to tissues.<\/li>\n<li>Myoglobin: Single polypeptide chain, non-cooperative oxygen binding, stores oxygen in muscles.<\/li>\n<\/ul>\n<h2>Solved Problem: Oxygen Transport and Hemoglobin<\/h2>\n<p>The oxygen-binding capacity of hemoglobin is influenced by pH levels. The <strong>Bohr effect <\/strong>describes how an increase in CO2 (and subsequent decrease in pH) reduces the oxygen-binding affinity of hemoglobin. This allows for efficient oxygen release to tissues with high metabolic rates.<\/p>\n<p>A sample of blood contains 15 g\/dL of hemoglobin. At pH 7.4, the oxygen-binding capacity of hemoglobin is 1.34 mL O2\/g hemoglobin. Calculate the oxygen-binding capacity at pH 7.2, given that the <em>Bohr effect <\/em>reduces oxygen binding by 10% for every 0.1 decrease in pH.<\/p>\n<p>## Step 1: Determine the initial oxygen-binding capacity<br \/>\nThe initial oxygen-binding capacity at pH 7.4 is 1.34 mL O2\/g hemoglobin. The total oxygen-binding capacity of the blood sample is 15 g\/dL * 1.34 mL O2\/g = 20.1 mL O2\/dL.<\/p>\n<h2>Step 2: Calculate the reduction in oxygen-binding capacity due to the Bohr effect<\/h2>\n<p>A decrease in pH from 7.4 to 7.2 is 0.2 pH units. Given that the Bohr effect reduces oxygen binding by 10% for every 0.1 decrease in pH, a 0.2 decrease results in a 20% reduction.<\/p>\n<h2>3: Calculate the oxygen-binding capacity at pH 7.2<\/h2>\n<p>The reduction in oxygen-binding capacity is 20% of 20.1 mL O2\/dL, which is 0.20 * 20.1 = 4.02 mL O2\/dL. Therefore, the oxygen-binding capacity at pH 7.2 is 20.1 &#8211; 4.02 = 16.08 mL O2\/dL.<\/p>\n<p>The oxygen-binding curves of hemoglobin and <strong>myoglobin <\/strong>differ significantly. Myoglobin has a higher affinity for oxygen and exhibits a hyperbolic oxygen-binding curve, whereas hemoglobin exhibits a sigmoidal curve due to its cooperative binding properties. This allows hemoglobin to efficiently transport oxygen over a range of oxygen tensions.<\/p>\n<p class=\"responsive-video-wrap clr\"><iframe title=\"Analytical Chemistry | Inorganic Chemistry | CSIR NET | IIT JAM | GATE | VedPrep Chem Academy\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/2OdbD-Rjz4E?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<section class=\"vedprep-faq\">\n<h2>Frequently Asked Questions<\/h2>\n<style>#sp-ea-15616 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-15616.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-15616.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-15616.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-15616.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-15616.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}<\/style><div id=\"sp_easy_accordion-1778508676\">\n<div id=\"sp-ea-15616\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"\" data-scroll-active-item=\"\" data-offset-to-scroll=\"0\">\n\n<!-- Start accordion card div. -->\n<div class=\"ea-card ea-expand sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156160\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156160\" aria-controls=\"collapse156160\" href=\"#\"  aria-expanded=\"true\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> What is the function of hemoglobin in oxygen transport?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse156160\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156160\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Hemoglobin is a tetrameric protein in red blood cells that transports oxygen from the lungs to body tissues.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156161\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156161\" aria-controls=\"collapse156161\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How does myoglobin differ from hemoglobin?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156161\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156161\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Myoglobin is a monomeric protein with one heme group that stores oxygen in muscles, while hemoglobin has four subunits and transports oxygen in blood.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156162\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156162\" aria-controls=\"collapse156162\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Why is hemoglobin's oxygen-binding curve sigmoidal?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156162\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156162\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">The sigmoidal curve reflects cooperative binding - when one subunit binds oxygen, it increases the affinity of the remaining subunits.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156163\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156163\" aria-controls=\"collapse156163\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Why does myoglobin have a hyperbolic oxygen-binding curve?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156163\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156163\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Myoglobin has only one subunit and shows no cooperativity, resulting in a hyperbolic curve with consistently high oxygen affinity.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156164\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156164\" aria-controls=\"collapse156164\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i>  What is the Bohr effect?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156164\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156164\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">The Bohr effect describes how increased CO\u2082 and decreased pH reduce hemoglobin's oxygen-binding affinity, promoting oxygen release to active tissues.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156165\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156165\" aria-controls=\"collapse156165\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What is the Hill coefficient in oxygen binding?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156165\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156165\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">The Hill coefficient quantifies the cooperativity of oxygen binding to hemoglobin; a value greater than 1 indicates positive cooperativity.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156166\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156166\" aria-controls=\"collapse156166\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Does myoglobin or hemoglobin have a higher affinity for oxygen? \t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156166\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156166\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Myoglobin has a higher affinity for oxygen than hemoglobin under most physiological conditions.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156167\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156167\" aria-controls=\"collapse156167\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How many oxygen molecules can hemoglobin carry?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156167\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156167\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Hemoglobin can carry up to four oxygen molecules, one per heme group across its four subunits.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156168\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156168\" aria-controls=\"collapse156168\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How does CO\u2082 affect hemoglobin's oxygen affinity?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156168\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156168\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">Increased CO\u2082 lowers pH, which decreases hemoglobin's oxygen affinity via the Bohr effect, facilitating oxygen delivery to metabolically active tissues.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-156169\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse156169\" aria-controls=\"collapse156169\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Is hemoglobin a single protein? \t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse156169\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-156169\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p>No. Hemoglobin is a tetrameric complex made of four polypeptide chains, each with a heme group - not a single protein.<\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-1561610\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse1561610\" aria-controls=\"collapse1561610\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What role does heme group play in oxygen transport?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse1561610\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-1561610\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><span style=\"font-weight: 400\">The heme group is a prosthetic group in both hemoglobin and myoglobin that directly binds oxygen, enabling its transport and storage.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<!-- Start accordion card div. -->\n<div class=\"ea-card  sp-ea-single\">\n\t<!-- Start accordion header. -->\n\t<h3 class=\"ea-header\">\n\t\t<!-- Add anchor tag for header. -->\n\t\t<a class=\"collapsed\" id=\"ea-header-1561611\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse1561611\" aria-controls=\"collapse1561611\" href=\"#\"  aria-expanded=\"false\" tabindex=\"0\">\n\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Which textbooks cover hemoglobin and myoglobin for GATE\/CSIR NET preparation?\t\t<\/a> <!-- Close anchor tag for header. -->\n\t<\/h3>\t<!-- Close header tag. -->\n\t<!-- Start collapsible content div. -->\n\t<div class=\"sp-collapse spcollapse \" id=\"collapse1561611\" data-parent=\"#sp-ea-15616\" role=\"region\" aria-labelledby=\"ea-header-1561611\">  <!-- Content div. -->\n\t\t<div class=\"ea-body\">\n\t\t<p><i><span style=\"font-weight: 400\">Lehninger Principles of Biochemistry<\/span><\/i><span style=\"font-weight: 400\"> and <\/span><i><span style=\"font-weight: 400\">Molecular Biology of the Cell<\/span><\/i><span style=\"font-weight: 400\"> by Alberts are the standard references for this topic.<\/span><\/p>\n\t\t<\/div> <!-- Close content div. -->\n\t<\/div> <!-- Close collapse div. -->\n<\/div> <!-- Close card div. -->\n<\/div>\n<\/div>\n\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Oxygen transport by hemoglobin and myoglobin is crucial for GATE aspirants. Understanding this mechanism is essential for biochemistry and molecular biology sections.<\/p>\n","protected":false},"author":12,"featured_media":13354,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","rank_math_seo_score":85},"categories":[31],"tags":[8870,2923,11960,11961,11962,11959,2922],"class_list":["post-13355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate","tag-biochemistry-for-gate","tag-competitive-exams","tag-myoglobin-for-gate","tag-myoglobin-for-gate-notes","tag-myoglobin-for-gate-questions","tag-oxygen-transport-hemoglobin","tag-vedprep","entry","has-media"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/posts\/13355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/comments?post=13355"}],"version-history":[{"count":4,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/posts\/13355\/revisions"}],"predecessor-version":[{"id":15619,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/posts\/13355\/revisions\/15619"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/media\/13354"}],"wp:attachment":[{"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/media?parent=13355"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/categories?post=13355"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vedprep.com\/exams\/wp-json\/wp\/v2\/tags?post=13355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}