Tag: biotechnology: general introduction

Questions Related to biotechnology: general introduction

From the below list, which of the following is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting the plasmid into a bacterium?
(i) Transformbacteria with recombinant DNA molecule.
(ii) Cut the plasmid DNA using restriction enzymes.
(iii) Extract plasmid DNA from bacterial cells.
(iv) Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments.
(v) Use ligase to seal plasmid DNA to nonplasmid DNA.

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  1. (iv), (v), (i), (ii), (iii)

  2. (iii), (ii), (iv), (v), (i)

  3. (iii), (iv), (v), (i), (ii)

  4. (ii), (iii), (v), (iv), (i)

Show answer
Correct Option: B
Explanation:
1. A gene of interest ( DNA fragment) is isolated from cells that have been grown in laboratory culture. 
2. Both the human DNA and the plasmid are treated with the same restriction enzyme to produce identical sticky ends. 
3. The restriction enzyme cuts the plasmid DNA at its single recognition sequence, disrupting the antibiotic resistance gene. 
4. The DNA fragment are mixed together and the complementary sticky ends are attached to each other by base pairing. The enzyme DNA- ligase is added to bond the sticky ends. 
5. The recombinant plasmid or molecular clone, is introduced into a bacterial cell by adding the DNA to a bacterial culture. Under the right condition some bacteria will take up the plasmid from solution by the process transformation. 
Therefore, the correct answer is option B.

Which one of the following is correctly matched regarding an Institute and its location?

commercial studies biotechnology: general introduction introduction to genetic engineering and production of insulin use of efficient and eco-friendly technology genetics of the future

  1. National Institute of Virology - Pune

  2. National lnstitute of Communicable Diseases - Lucknow

  3. Central Drug Research Institute - Kasauli

  4. National Institute of Nutrition - Mumbai

Show answer
Correct Option: A
Explanation:

The National Institute of Virology (NIV) is a premier virus research laboratory in Pune. The National Institute of Communicable Diseases (NICD) is situated in New Delhi. It has been renamed as National Centre for Disease Control now. The Central Drug Research Institute (CDRI) is a multidisciplinary research laboratory in Lucknow. The National Institute of Nutrition (NIN) is an Indian Public health, Biotechnology and Translational research centre located in Hyderabad. 

Thus, the correct answer is option A.