{"id":91094,"date":"2025-06-01T10:45:59","date_gmt":"2025-06-01T10:45:59","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91094"},"modified":"2025-06-01T10:45:59","modified_gmt":"2025-06-01T10:45:59","slug":"consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/","title":{"rendered":"Consider the following minerals :\n  1. Calcium  2. Iron  3. Sodium  Wh"},"content":{"rendered":"<p>Consider the following minerals :<\/p>\n<ul>\n<li>1. Calcium<\/li>\n<li>2. Iron<\/li>\n<li>3. Sodium<\/li>\n<\/ul>\n<p>Which of the minerals given above is\/are required by human body for the contraction of muscles?<\/p>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option3&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2013<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2013.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2013\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nCalcium and Sodium are minerals required by the human body for the contraction of muscles.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\n&#8211;   **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction.<br \/>\n&#8211;   **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential.<br \/>\n&#8211;   **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nMuscle contraction is a complex physiological process involving nerve impulses, changes in membrane potential, release of neurotransmitters, and the interaction of contractile proteins (actin and myosin) mediated by calcium ions. Electrolytes like sodium, potassium, calcium, and magnesium are all important for proper muscle and nerve function.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Consider the following minerals : 1. Calcium 2. Iron 3. Sodium Which of the minerals given above is\/are required by human body for the contraction of muscles? [amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; option3=&#8221;1 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option3&#8243;] This question was previously asked in UPSC IAS &#8211; 2013 Download PDFAttempt &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Consider the following minerals :\n  1. Calcium  2. Iron  3. Sodium  Wh\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/#more-91094\">Detailed Solution<span class=\"screen-reader-text\">Consider the following minerals :<br \/>\n  1. Calcium  2. Iron  3. Sodium  Wh<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1092],"tags":[1467,1117,1328],"class_list":["post-91094","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1467","tag-biology","tag-skeletal-and-muscle-system","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Consider the following minerals :  1. Calcium 2. Iron 3. Sodium Wh<\/title>\n<meta name=\"description\" content=\"Calcium and Sodium are minerals required by the human body for the contraction of muscles. - **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction. - **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential. - **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Consider the following minerals :  1. Calcium 2. Iron 3. Sodium Wh\" \/>\n<meta property=\"og:description\" content=\"Calcium and Sodium are minerals required by the human body for the contraction of muscles. - **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction. - **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential. - **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:45:59+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Consider the following minerals :  1. Calcium 2. Iron 3. Sodium Wh","description":"Calcium and Sodium are minerals required by the human body for the contraction of muscles. - **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction. - **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential. - **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/","og_locale":"en_US","og_type":"article","og_title":"Consider the following minerals :  1. Calcium 2. Iron 3. Sodium Wh","og_description":"Calcium and Sodium are minerals required by the human body for the contraction of muscles. - **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction. - **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential. - **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:45:59+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/","url":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/","name":"Consider the following minerals : 1. Calcium 2. Iron 3. Sodium Wh","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:45:59+00:00","dateModified":"2025-06-01T10:45:59+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Calcium and Sodium are minerals required by the human body for the contraction of muscles. - **Calcium:** Calcium ions (Ca\u00b2\u207a) are essential for initiating muscle contraction. In skeletal muscle, the release of calcium from the sarcoplasmic reticulum triggers the binding of myosin to actin filaments, leading to the sliding filament mechanism of contraction. - **Sodium:** Sodium ions (Na\u207a) play a critical role in the electrical signaling that initiates muscle contraction. An action potential, involving the influx of sodium ions across the muscle cell membrane, causes depolarization, which in turn leads to the release of calcium ions. Potassium ions (K\u207a) are also crucial for repolarization and maintaining the membrane potential. - **Iron:** Iron is vital for overall muscle function, primarily because it is a component of myoglobin, which stores oxygen in muscle cells, and enzymes involved in energy metabolism. However, it is not directly involved in the biochemical process of muscle fiber contraction itself in the same way calcium and sodium are.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/consider-the-following-minerals-1-calcium-2-iron-3-sodium-wh\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC IAS","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-ias\/"},{"@type":"ListItem","position":3,"name":"Consider the following minerals : 1. Calcium 2. Iron 3. Sodium Wh"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91094","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=91094"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/91094\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=91094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=91094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=91094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}