{"id":23339,"date":"2018-12-10T17:48:44","date_gmt":"2018-12-10T12:18:44","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=23339"},"modified":"2018-12-17T11:12:48","modified_gmt":"2018-12-17T05:42:48","slug":"cbse-question-paper-2015-class-12-biotechnology","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/","title":{"rendered":"CBSE Question Paper 2015 class 12 Biotechnology"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#Last_Year_Question_Paper_Class_12_Biotechnology_2015\" >Last Year Question Paper Class 12 Biotechnology 2015<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#General_Instructions\" >General Instructions:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#SECTION_A\" >SECTION A<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#SECTION_B\" >SECTION B<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#SECTION_C\" >SECTION C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#SECTION_D\" >SECTION D<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#CBSE_Question_Paper_2015_class_12_Biotechnology\" >CBSE Question Paper 2015 class 12 Biotechnology<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/#Previous_Year_Question_Paper_for_class_12_in_PDF\" >Previous Year Question Paper for class 12 in PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>CBSE Question Paper 2015 class 12 Biotechnology<\/strong>\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2015. CBSE previous year question papers with solution are available in myCBSEguide mobile app and cbse guide website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice papers to cbse schools in India and abroad.<\/p>\n<p style=\"text-align: center;\"><strong>CBSE Question Paper 2015 class 12 Biotechnology<\/strong><\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-12-biotechnology\/1849\/cbse-last-year-papers\/3\/\">Download as PDF<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Last_Year_Question_Paper_Class_12_Biotechnology_2015\"><\/span>Last Year Question Paper Class 12 Biotechnology 2015<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"General_Instructions\"><\/span><strong>General Instructions:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div>\n<ul>\n<li>All questions are compulsory.<\/li>\n<li>There is no overall choice. However, an internal choice has been provided in one question of two marks and two questions of five marks. You have to attempt only one of the choices in such questions. Question paper contains four sections \u00be A, B, C and D.<\/li>\n<li>Questions No. 1 to 6 are very short answer questions, carrying 1 markeach.<\/li>\n<li>Questions No. 7 to 14 are short answer questions, carrying 2 marks each.<\/li>\n<li>Questions No. 15 to 25 are also short answer questions, carrying 3 marks each.<\/li>\n<li>Questions No. 26 to 28 are long answer questions, carrying 5 marks each.<\/li>\n<li>Use of calculators is not permitted. However, you may use log tables, if necessary.<\/li>\n<\/ul>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_A\"><\/span><strong>SECTION A<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>1. What is the relationship between specific activity and purity of a protein?<\/p>\n<p>2.Metagenomic approach is of immense use to scientists. How?<\/p>\n<p>3. How can one produce large amounts of one of the strands of double stranded DNA using natural mechanism?<\/p>\n<p>4. A farmer wants to produce hybrid of mustard plants in his field. As a biotechnologist, what would you suggest to him to ensure successful pollination or fertilization?<\/p>\n<p>5. In isolating recombinant interferons from a culture of E. coli, the filtrate was subjected to purification processes, but no interferons were obtained. Suggest a possible reason<\/p>\n<p>6. Relationship between the number of genes and proteins is not linear. Why ? Give two reasons.<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_B\"><\/span><strong>SECTION B<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>7.<\/strong> What is the importance of maintaining pH while culturing animal cells? How is the pH maintained in a culture media?<\/p>\n<p>8. On a large-scale culturing of microbes, the sources of nutrients used in the medium are different from that of a small scale culture. Why? Name any two sources of nutrients for a large-scale culture.<\/p>\n<p>9. What is the difference between a defined and a serum-supplemented medium?<\/p>\n<p>10. r-HuEPO is preferred over blood transfusion in persons with blood loss. Why?<\/p>\n<p>11. Differentiate between Batch and Continuous culture.<\/p>\n<p>12. Why is inverted microscopes used instead of compound microscope in observing animal cells in culture?<\/p>\n<p>13. Karyotype determination of animal cell culture is important. Why? What factors affect its stability?<br \/>\n<strong>OR<\/strong><br \/>\nWhy is it difficult to culture animal cells as compared to plant cells? Why is it essential to supplement animal cell culture media with serum?<\/p>\n<p>14. Interspecific cross leads to formation of sterile seeds. What could be the reasons for the same and how can the embryo rescue be achieved?<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_C\"><\/span><strong>SECTION C<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>15. Name three enzymes used in cloning and write one function of each<\/p>\n<p>16. Explain with an example, how proteins can be engineered to improve their properties.<\/p>\n<p>17. Differentiate between structural and functional genomics.<\/p>\n<p>18. Describe how Agrobacterium tumefaciens can be used to introduce foreign gene into plants.<\/p>\n<p>19. What are edible vaccines? How are they better than conventional vaccines?<\/p>\n<p>20. There are several concerns being raised in accepting transgenic crops. List any six of them.<\/p>\n<p>21. What is Molecular Pharming? Write any four advantages of expressing transgenic proteins in milk.<\/p>\n<p>22. Schematically depict the steps involved in FISH technique and write its one application.<\/p>\n<p>23. What is insertional activation? Describe a visual method of screening the transformed host cells.<\/p>\n<p>24. Gene Prediction by computers is different from number of genes identified by experimental methods. Why is it so? Is there any correlation between the complexity of an organism and the total number of genes in its genome? Justify<\/p>\n<p>25. Describe the important parts of a mass spectrometer with diagram. Why has this technique become important in studying proteins?<\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"SECTION_D\"><\/span><strong>SECTION D<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>26. Explain with suitable diagram, the principle and steps involved in Sanger\u2019s method of DNA sequencing.<\/p>\n<p>27. What do you mean by aqueous two-phase partition process for separation of proteins ? What precautions should be taken to maximise protein stability during purification steps ?<br \/>\n<strong>OR<\/strong><br \/>\nWhat are nutraceutical proteins ? Why is curd considered pro-biotic? Whey is a nutraceutical protein. Justify.<\/p>\n<p>28. Define SNPs. Describe a possible use of this technique in medicine. How do the physicians decide our susceptibility or resistance to a particular disease through this technique ? Explain with the help of an example.<br \/>\n<strong>OR<\/strong><br \/>\nName four major databases for bioinformatics with their respective information contents. Name any database retrieval tool and its application.<\/p>\n<\/div>\n<div>\n<p style=\"text-align: center;\"><strong>These are questions only. To view and download complete question paper with solution install myCBSEguide App from google play store or login to our\u00a0<a href=\"https:\/\/mycbseguide.com\/dashboard\/\">student dashboard<\/a>.<\/strong><\/p>\n<p style=\"text-align: center;\"><b><strong><a class=\"button\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\">Download myCBSEguide App<\/a><\/strong><\/b><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Question_Paper_2015_class_12_Biotechnology\"><\/span>CBSE Question Paper 2015 class 12 Biotechnology<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download class 12 Biotechnology question paper with solution from best CBSE App the myCBSEguide. CBSE class 12 Biotechnology question paper 2015 in PDF format with solution will help you to understand the latest question paper pattern and marking scheme of the CBSE board examination. You will get to know the difficulty level of the question paper.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Previous_Year_Question_Paper_for_class_12_in_PDF\"><\/span>Previous Year Question Paper for class 12 in PDF<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE question papers 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005 and so on for all the subjects are available under this download link. Practicing real question paper certainly helps students to get confidence and improve performance in weak areas.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-last-year-papers\/3\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-last-year-papers\/3\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-mathematics\/1284\/cbse-last-year-papers\/3\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-last-year-papers\/3\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-accountancy\/1315\/cbse-last-year-papers\/3\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-business-studies\/1727\/cbse-last-year-papers\/3\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-economics\/1327\/cbse-last-year-papers\/3\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-history\/1869\/cbse-last-year-papers\/3\/\">History<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-geography\/1863\/cbse-last-year-papers\/3\/\">Geography<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-political-science\/1879\/cbse-last-year-papers\/3\/\">Political Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physical-education\/1877\/cbse-last-year-papers\/3\/\">Physical Education<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-computer-science\/1851\/cbse-last-year-papers\/3\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-informatics-practices\/1873\/cbse-last-year-papers\/3\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-english-core\/1855\/cbse-last-year-papers\/3\/\">English Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-core\/1865\/cbse-last-year-papers\/3\/\">Hindi Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-hindi-elective\/1867\/cbse-last-year-papers\/3\/\">Hindi Elective<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12\/1250\/\">Other Subjects<\/a><\/li>\n<\/ul>\n<p>To download CBSE Question Paper class 12 Accountancy, Chemistry, Physics, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies, and Home Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CBSE Question Paper 2015 class 12 Biotechnology\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2015. CBSE previous year question papers with solution are available in myCBSEguide mobile app and cbse guide website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice &#8230; <a title=\"CBSE Question Paper 2015 class 12 Biotechnology\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2015-class-12-biotechnology\/\" aria-label=\"More on CBSE Question Paper 2015 class 12 Biotechnology\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1346,1014,1447],"tags":[345,1582,1527,1342,80,1631],"class_list":["post-23339","post","type-post","status-publish","format-standard","hentry","category-cbse","category-cbse-question-papers","category-other-subjects-cbse-class-12","tag-biotechnology","tag-cbse-previous-year-paper","tag-cbse-question-paper","tag-class-12","tag-last-year-papers","tag-ten-year-questions-papers"],"yoast_head":"<!-- This site is optimized with the 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