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ISC Class XII Board Exam 2020 : Biotechnology Paper 1 (Theory)

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi
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BIOTECHNOLOGY PAPER 1 (THEORY) (Maximum Marks: 70) (Time allowed: Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------Answer Question 1 (compulsory) from Part I and five questions from Part II. The intended marks for questions or parts of questions are given in brackets [ ]. ---------------------------------------------------------------------------------------------------------------PART I (20 Marks) Answer all questions. Question 1 (a) Mention any one significant difference between each of the following: (i) Nucleotide and Nucleoside (ii) Gene and Genome [5] (iii) Finite cell lines and Continuous cell lines (b) (iv) Primer and Primase (v) Micronutrients and Macronutrients Answer the following questions: (i) What are Polylinker sites? (ii) What is Subtilisin? [5] (iii) Name two types of phage vectors. (c) (iv) What is the role of Agrobacterium tumefaciens in genetic engineering? (v) Why is DNA replication called semi-discontinuous? Write the full form of each of the following: (i) DDBJ (ii) HEPA [5] (iii) RFLP (iv) VNTR (v) MS Medium ---------------------------------------------------------------------------------------------------------------This paper consists of 3 printed pages and 1 blank page. 1220-878A Copyright reserved. Turn over

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