{"id":84939,"date":"2025-06-01T02:56:34","date_gmt":"2025-06-01T02:56:34","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=84939"},"modified":"2025-06-01T02:56:34","modified_gmt":"2025-06-01T02:56:34","slug":"which-one-of-the-following-statements-regarding-haemoglobin-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-regarding-haemoglobin-is\/","title":{"rendered":"Which one of the following statements regarding haemoglobin is"},"content":{"rendered":"

Which one of the following statements regarding haemoglobin is correct?<\/p>\n

[amp_mcq option1=”Haemoglobin present in RBC can carry only oxygen but not carbon dioxide.” option2=”Haemoglobin of RBC can carry both oxygen and carbon dioxide.” option3=”Haemoglobin of RBC can carry only carbon dioxide.” option4=”Haemoglobin is only used for blood clotting and not for carrying gases.” correct=”option2″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC CDS-1 – 2019<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body’s tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions.
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\nHaemoglobin in RBCs can bind and transport both oxygen and a portion of carbon dioxide.
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\nOxygen binds to the heme group (iron-containing part) of haemoglobin, forming oxyhaemoglobin. Carbon dioxide binds to the amino groups of the globin protein part of haemoglobin, forming carbaminohemoglobin. The binding of oxygen and carbon dioxide are influenced by factors such as pH, temperature, and the concentration of other molecules like 2,3-bisphosphoglycerate (2,3-BPG).
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements regarding haemoglobin is correct? [amp_mcq option1=”Haemoglobin present in RBC can carry only oxygen but not carbon dioxide.” option2=”Haemoglobin of RBC can carry both oxygen and carbon dioxide.” option3=”Haemoglobin of RBC can carry only carbon dioxide.” option4=”Haemoglobin is only used for blood clotting and not for carrying gases.” correct=”option2″] This … <\/p>\n

Detailed SolutionWhich one of the following statements regarding haemoglobin is<\/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":[1087],"tags":[1119,1117,1126],"class_list":["post-84939","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-1","tag-1119","tag-biology","tag-circulatory-system","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements regarding haemoglobin is<\/title>\n<meta name=\"description\" content=\"The correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions. Haemoglobin in RBCs can bind and transport both oxygen and a portion of carbon dioxide.\" \/>\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\/which-one-of-the-following-statements-regarding-haemoglobin-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following statements regarding haemoglobin is\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions. Haemoglobin in RBCs can bind and transport both oxygen and a portion of carbon dioxide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-regarding-haemoglobin-is\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T02:56:34+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":"Which one of the following statements regarding haemoglobin is","description":"The correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions. Haemoglobin in RBCs can bind and transport both oxygen and a portion of carbon dioxide.","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\/which-one-of-the-following-statements-regarding-haemoglobin-is\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following statements regarding haemoglobin is","og_description":"The correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions. Haemoglobin in RBCs can bind and transport both oxygen and a portion of carbon dioxide.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-regarding-haemoglobin-is\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T02:56:34+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\/which-one-of-the-following-statements-regarding-haemoglobin-is\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-regarding-haemoglobin-is\/","name":"Which one of the following statements regarding haemoglobin is","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T02:56:34+00:00","dateModified":"2025-06-01T02:56:34+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is B. Haemoglobin is the protein molecule in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. While its primary function is oxygen transport, haemoglobin also binds to and transports a small percentage (about 20-25%) of carbon dioxide from the tissues back to the lungs. The majority of carbon dioxide is transported in the blood plasma as bicarbonate ions. 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