{"id":23350,"date":"2018-12-10T18:21:18","date_gmt":"2018-12-10T12:51:18","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=23350"},"modified":"2018-12-17T11:11:18","modified_gmt":"2018-12-17T05:41:18","slug":"cbse-question-paper-2011-class-12-biotechnology","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2011-class-12-biotechnology\/","title":{"rendered":"CBSE Question Paper 2011 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-2011-class-12-biotechnology\/#Last_Year_Question_Paper_Class_12_Biotechnology_2011\" >Last Year Question Paper Class 12 Biotechnology 2011<\/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-2011-class-12-biotechnology\/#General_Instructions\" >General Instructions:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2011-class-12-biotechnology\/#CBSE_Question_Paper_2011_class_12_Biotechnology\" >CBSE Question Paper 2011 class 12 Biotechnology<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2011-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 2011 class 12 Biotechnology<\/strong>\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2011. 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 2011 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_2011\"><\/span>Last Year Question Paper Class 12 Biotechnology 2011<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div>\n<h3><span class=\"ez-toc-section\" id=\"General_Instructions\"><\/span><strong>General Instructions:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\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.<\/li>\n<li>1 to 6 are very short answer questions, carrying 1 mark each.<\/li>\n<li>7 to 14 are short answer questions, carrying 2 marks each.<\/li>\n<li>15 to 25 are also short answer questions, carrying 3 marks each.<\/li>\n<li>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<p>1. Which method of measuring microbial growth will give most accurate representation of<br \/>\ncell number?<\/p>\n<p>2. Monoclonal antibody against CD-3 is an effective therapeutic agent in overcoming<br \/>\nkidney allograft rejection. How?<\/p>\n<p>3. Why is liquid nitrogen used to store animal cells?<\/p>\n<p>4. Which two properties makes virus good vectors?<\/p>\n<p>5. Why is humulin considered better than pig insulin for treatment of diabetes?<\/p>\n<p>6. If you are given a sequence of alphabets without any label, how will you find out whether it is RNA or protein?<\/p>\n<p>7. Write four precautions one should take, to maximize protein stability during various purification steps.<\/p>\n<p>8. Eukaryotic cells are often preferred for expression of eukaryotic proteins. Why?<\/p>\n<p>9. Embryo rescue is needed in case of inter-generic or inter-species crosses in plants. Why?<\/p>\n<p>10. Protoplast culture is gaining importance in plant biotechnology. Why?<\/p>\n<p>11. CO<sup>2<\/sup> incubators are used to grow animal cells in culture rather than regular BOD\u2019s. Why?<br \/>\n<strong>OR<\/strong><br \/>\nGive two features to distinguish finite cell lines and continuous cell lines.<\/p>\n<p>12. Calculate the generation time of a bacterial population in which the number of bacteria increases from 104\/ml to 107\/ml during four hours of exponential growth.<\/p>\n<p>13. Mention two problems which make the downstream processing of recombinant proteins difficult and costly<\/p>\n<p>14. Indicate the use of the following in microbial cell culture :<br \/>\n(a) olive oil<br \/>\n(b) baffle flask<br \/>\n(c) urea<br \/>\n(d) agar<\/p>\n<p>15. (a) Explain, in brief, two types of non-covalent interactions found in proteins.<br \/>\n(b) Name two covalent interactions found in proteins.<\/p>\n<p>16. What is the use of adding subtilisin to the laundry detergents? Why and how is the wild-type<br \/>\nsubtilisin changed to the improved one which is used in detergents nowadays?<\/p>\n<p>17. What are the four essential features of vectors ? Give two reasons why plasmid vectors are ideal for cloning<\/p>\n<p>18. Represent various basic steps in r-DNA technology using labelled diagram.<\/p>\n<p>19. Differentiate between primary and secondary metabolites. Name any two secondary metabolites produced through tissue culture.<\/p>\n<p>20. What are the genetic engineering strategies used to create transgenic crops with following traits?<br \/>\n(a) Herbicide tolerance<br \/>\n(b) Insect resistance<br \/>\n(c) Virus resistance<\/p>\n<p>21. In a genome sequence, are \u2018in-silico\u2019 prediction methods for gene number, accurate?<br \/>\nSuggest any two reasons.<\/p>\n<p>22. How are fluorescent colours introduced into chromosomes ? Give a possible use of this<br \/>\ntechnique. Draw a suitable diagram of the same.<\/p>\n<p>23. In animal cell culture, osmolarity of the culture medium has significant role in cell<br \/>\ngrowth and function. Justify. What ingredients decides osmolarity of the medium?<\/p>\n<p>24. What are monoclonal antibodies? How hybridoma technology has been used to<br \/>\nproduce monoclonal antibodies at commercially feasible level?<\/p>\n<p>25. Draw flow chart to show steps for the isolation of an extracellular metabolite from<br \/>\nmicrobial culture, using an example.<\/p>\n<p style=\"text-align: left;\">26. (a) Even minor genetic variations in the coding regions of genes underlie differences<br \/>\nin our susceptibility to or protection from all kinds of diseases. What are these<br \/>\ngenomic variations called ? Explain with an example such variations, associated<br \/>\nwith any disease.<br \/>\n(b) Give two more applications of such variations present in the non-coding region of<br \/>\nthe genome.<br \/>\n<strong>OR<\/strong><br \/>\nExpand the term BLAST. Discuss the steps involved in comparison of DNA<br \/>\nsequences using this tool.<\/p>\n<p>27. What are zymogens? Explain how the correct folding of enzyme chymotrypsin leads to<br \/>\nits function. Give examples of two more enzymes which use the same mechanism.<br \/>\n<strong>OR<\/strong><br \/>\n(a) How can it be proved that sickle cell anaemia results from an amino acid<br \/>\nsubstitution in haemoglobin ?<br \/>\n(b) Why does the shape of haemoglobin gets altered?<\/p>\n<p>28. PCR technique has revolutionised modern biology. Briefly highlight the technique and<br \/>\nsuggest how it can be used to detect the presence of pathogens.<\/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_2011_class_12_Biotechnology\"><\/span>CBSE Question Paper 2011 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 2011 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 2011 class 12 Biotechnology\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2011. 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 2011 class 12 Biotechnology\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2011-class-12-biotechnology\/\" aria-label=\"More on CBSE Question Paper 2011 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-23350","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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