{"id":91132,"date":"2025-06-01T10:47:33","date_gmt":"2025-06-01T10:47:33","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91132"},"modified":"2025-06-01T10:47:33","modified_gmt":"2025-06-01T10:47:33","slug":"which-of-the-following-statements-is-are-correct-1-viruses-lack-en","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/","title":{"rendered":"Which of the following statements is\/are correct?\n  1. Viruses lack en"},"content":{"rendered":"<p>Which of the following statements is\/are correct?<\/p>\n<ul>\n<li>1. Viruses lack enzymes necessary for the generation of energy.<\/li>\n<li>2. Viruses can be cultured in any synthetic medium.<\/li>\n<li>3. Viruses are transmitted from one organism to another by biological vectors only.<\/li>\n<\/ul>\n<p>Select the correct answer using the codes given below.<\/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;option1&#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\">Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy.<\/section>\n<section id=\"pyq-key-points\">Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell&#8217;s metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.<\/section>\n<section id=\"pyq-additional-information\">Viruses consist of genetic material (DNA or RNA) enclosed in a protein coat (capsid), and sometimes an outer envelope derived from the host cell membrane. Their dependence on host cells for replication and metabolism distinguishes them from cellular organisms like bacteria or fungi.<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following statements is\/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic medium. 3. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below. [amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;2 and 3 only&#8221; &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Which of the following statements is\/are correct?\n  1. Viruses lack en\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/#more-91132\">Detailed Solution<span class=\"screen-reader-text\">Which of the following statements is\/are correct?<br \/>\n  1. Viruses lack en<\/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":[1467,1117,1139],"class_list":["post-91132","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1467","tag-biology","tag-viral-diseases","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>Which of the following statements is\/are correct?  1. Viruses lack en<\/title>\n<meta name=\"description\" content=\"Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy. Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell&#039;s metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.\" \/>\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-of-the-following-statements-is-are-correct-1-viruses-lack-en\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements is\/are correct?  1. Viruses lack en\" \/>\n<meta property=\"og:description\" content=\"Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy. Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell&#039;s metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:47:33+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 of the following statements is\/are correct?  1. Viruses lack en","description":"Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy. Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell's metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.","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-of-the-following-statements-is-are-correct-1-viruses-lack-en\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements is\/are correct?  1. Viruses lack en","og_description":"Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy. Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell's metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:47:33+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-of-the-following-statements-is-are-correct-1-viruses-lack-en\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/","name":"Which of the following statements is\/are correct? 1. Viruses lack en","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:47:33+00:00","dateModified":"2025-06-01T10:47:33+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Only statement 1 is correct: Viruses lack enzymes necessary for the generation of energy. Statement 1 is correct. Viruses are acellular and obligate intracellular parasites. They do not possess their own metabolic machinery, including enzymes for energy production like respiration or fermentation. They hijack the host cell's metabolic processes to obtain energy and replicate. Statement 2 is incorrect because viruses require living cells to replicate and cannot be cultured in synthetic non-living media. Statement 3 is incorrect because while biological vectors are one mode of transmission for some viruses, many viruses are transmitted through non-vector means such as direct contact, airborne droplets, contaminated surfaces, food, or water.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-is-are-correct-1-viruses-lack-en\/#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":"Which of the following statements is\/are correct? 1. 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