(Download) CBSE: Class XII Biotechnology Question Paper - 2019

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Question Papers For Board Examinations 2019

Class – XII

Subject – Biotechnology

Subject :- Biotechnology

Class : XII

Year : 2019

General Instructions :

(i) Question paper contains four sections A, B, C and D.
(ii) There is internal choice in questions in all the sections. You have to attempt only one of the choices in such questions.
(iii) Questions No. 1 to 6 are very short answer questions, carrying 1 mark each.
(iv) Questions No. 7 to 14 are short answer questions, carrying 2 marks each.
(v) Questions No. 15 to 25 are also short answer questions, carrying 3 marks each.
(vi) Questions No. 26 to 28 are long answer questions, carrying 5 marks each.
(vii) Use of calculators is not permitted. However, you may use log tables, if necessary.

Questions :

1. What is the function of reverse transcriptase enzyme ?
OR
What is the advantage of using polylinker in a vector ?

2. Why is macerozyme used in obtaining cell suspension culture from plant tissue ?
OR
Name the hormone involved in fruit ripening.

3. What does IUPAC single letter code ‘R’ stand for ?

4. What is lipofection ?

5. If the specific growth requirements of an isolated strain of bacterium are not known, which type of medium should be used to grow (culture) the same ?

6. Which type of non-covalent interaction, through a weak attraction force,is important in biomolecules ?