What is true A,B and C in the given diagrammatic representation of rDNA technology ?

I. At A same restriction enzyme is used to cut both foreign and vector DNA

II. The enzyme used at B is DNA ligase

III. Step C can be called as transformation

1. I and II only

2. I and III only

3. II and III only

4. I,II and III

Subtopic:  Introduction & History: II | Tools: Enzymes: I | Introduction & History | Tools |
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The process of separation and purification of expressed protein before marketing is called

(1) upstream processing

(2) downstream processing

(3) bioprocessing

(4) postproduction processing

Subtopic:  Large Scale Production: II | Large Scale Production |
 91%
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NEET - 2017
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What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ?

(1) The larger the fragment size, the farther it moves

(2) The smaller the fragment size, the farther it moves

(3) Positively charged fragments move to farther end

(4) Negatively charged fragments do not move

Subtopic:  Process of Biotech |
 92%
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NEET - 2017
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A gene, whose expression helps to identify transformed cells is known as

1. selectable marker                 

2. vector

3. plasmid                                 

4. structural gene

Subtopic:  Selectable Markers: II | Selectable Markers |
 87%
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The DNA fragments separated on an agarose gel can be visualised after staining with

(1) bromophenol blue

(2) acetocarmine

(3) aniline blue 

(4) ethidium bromide

Subtopic:  Process of Biotech |
 97%
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NEET - 2017
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Stirred-tank bioreactors have been designed for:

1. purification of product

2. addition of preservatives to the product

3. availability of oxygen throughout the process

4. ensuring anaerobic conditions in the culture vessel

Subtopic:  Large Scale Production: II | Large Scale Production |
 79%
From NCERT
NEET - 2016
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A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using

(1) Eco RI                       

(2) taq polymerase

(3) polymerase III           

(4) ligase

Subtopic:  Tools: Enzymes: II | Tools |
 90%
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NEET - 2016
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Which of the following is not a component of downstream processing?

1. Separation

2. Purification

3. Preservation

4. Expression

Subtopic:  Large Scale Production: II | Large Scale Production |
 77%
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NEET - 2016
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Which of the following restriction enzymes produces blunt ends?

(1) Sal I                           

(2) Eco RV

(3) Xho                           

(4) Hind III

 

Subtopic:  Tools: Enzymes: II | Tools |
NEET - 2016
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Which of the following is a endonuclease?

(1) Protease

(2) DNase I

(3) RNase restriction

(4) Hind II

Subtopic:  Tools: Enzymes: II | Tools |
 85%
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NEET - 2016
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