Bihar Board - Class 12 Biology-Chapter 11. Biotechnology : Principles and Processes Multiple Choice Questions
The multiple choice questions for Chapter 11. Biotechnology : Principles and Processes of Class 12 Chemistry are provided here in English. These questions are based on the NCERT curriculum for Class 12. They are designed to help students assess their understanding of the key concepts covered in the chapter. These multiple choice questions will be useful not only for the Class 12 board exams but also for entrance exams like NEET. The questions for Bihar Board Class 12 Chemistry, Chapter 11. Biotechnology : Principles and Processes, have been prepared by expert teachers at Vidyakul.
Multiple Choice Question
1. The construction of the first recombinant DNA was done by using the native plasmid of-
(a) E. Coli
(b) Salmonella typhimurium
(c) B.Thuringiensis
(d) Yeast
Answer:b
2. Restriction endonucleases:
(a) Cleave DNA at highly specific recognition sequences
(b) Are inserted into bacteria by bacteriophages
(c) Are made only by eukaryotic ceHs
(d) Add methyl groups to specific DNA sequences.
Answer:a
3. Plasmids :
(a) Are circular protein molecules
(b) Are required by bacteria
(c) Are tiny bacteria
(d) Confer resistance to antibiotics
Answer:d
4. Restriction enzymes are used in genetic engineering because:
(a) They can cut DNA at specific base sequence
(b) They are nuclease that can cut DNA at variable sites
(c) They can join different DNA fragments
(d) They are proteolytic enzymes which can degrade harmful proteins.
Answer:a
5. When genotype of an organism is improved by the addition of foreign genes the process sin called-
(a) Biotechnology
(b) Tissue culture
(c) Genetic engineering
(d) Genetic diversity
Answer:c
6. The procedure through which a piece of DNA is introduced in a host bacterium is called
(a) Cloning
(b) Transformation
(c) PCR
(d) Clonal selection
Answer:b
7. ECORI cleaves DNA at-
(a) G A A T T C
(b) T A T A G C
(c) A A g g T T
(d) g A T A T C
Answer:a
8 Which enzymes are used to break the cell to release DMA?
(a) Lysozyme
(b)Cellulase
(c)Chitinase
(d)AII of these
Answer:d
9 The first restriction endonuclease reported was
(a) Hind II
(b) EcoRI
(c) Hind III
(d) BamHI
Answer:a
10 The controlled use of biological agents, such as microorganisms or cellular components, for beneficial use is called
(a) plant biology
(b) biochemistry
(c) biotechnology
(d) molecular biology
Answer:c
