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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NEET - 2017
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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%
From NCERT
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 |
 89%
From NCERT
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%
From NCERT
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 |
 84%
From NCERT
NEET - 2016
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The Taq polymerase enzyme is obtained from

1. Thiobacillus ferroxidans

2. Bacillus subtilis

3. Pseudomonas subtilis

4. Thermus aquaticus

Subtopic:  Polymerase Chain Reaction: PCR |
 94%
From NCERT
NEET - 2016
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The cutting of DNA at specific locations became possible with the discovery of 

(1) restriction enzymes

(2) probes

(3) selectable markets

(4) ligases

Subtopic:  Introduction & History: II | Tools: Enzymes: II | Introduction & History | Tools |
 94%
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NEET - 2015
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The DNA molecule to which the gene of interest is integrated for cloning is called:

1. Transformer 2. Vector
3. Template 4. Carrier 
Subtopic:  Tools: Vectors: I | Tools |
 84%
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NEET - 2015
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