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ISC Class XII Board Specimen 2022 : Biotechnology [Semester 2]

4 pages, 35 questions, 0 questions with responses, 0 total responses,    0    0
ISC 12th
Indian School Certificate Examination (ISC), New Delhi
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ISC SEMESTER 2 EXAMINATION SPECIMEN QUESTION PAPER BIOTECHNOLOGY PAPER 1 (THEORY) ----------------------------------------------------------------------------------------------Maximum Marks: 35 Time allowed: One and a half hour Candidates are allowed an additional 10 minutes for only reading the paper. They must NOT start writing during this time. ---------------------------------------------------------------------------------------------------------------- Answer all questions in Section A, Section B and Section C. The intended marks for questions or parts of questions are given in brackets.[ ] ---------------------------------------------------------------------------------------------------------------- SECTION A 7 MARKS Question 1 (i) When plant cells without cell wall are used for culturing, it is called ___________ culture. [1] (ii) The phase of microbial growth kinetics in which there is no increase in the cell number but the cellular mass increases to some extent, is called __________ phase. [1] (iii) Write the full form of each of the following: (iv) (a) EST [1] (b) STS [1] Which of the following important enzymes are used in disaggregation of animal cells? (a) Trypsin and collagenase (b) Tyrosine and collagenase (c) Trypsin and collagen (d) Tyrosine and collagen 1 [1]

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