In the screening process during rDNA experiments, clones that metabolize β-gal turn:

1. Colorless

2. Blue

3. Yellow

4. Green

Subtopic:  Selectable Markers: III | Selectable Markers |
 66%
From NCERT
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Microinjection is suitable for :

1. Injecting an ovum into the sperm in IVF

2. Transforming animal cells

3. Injecting very small sized drug particles into neurons

4. Conferring antibiotic resistance to a certain strain of bacteria 

Subtopic:  Tools: Vectors: II | Tools |
 71%
From NCERT
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The plasmid pBR322 does not contain:

1. An origin of replication site
2. A gene that encodes for restrictor of plasmid copy number
3. Gene for Ampicillin and Streptomycin resistance
4. Sites for many restriction enzymes
Subtopic:  Tools: Vectors: II | Tools |
 65%
From NCERT
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The bioreactor shown in the diagram is:

   

1. Sparged stirred tank type

2. Airlift type

3. Simple stirred tank type

4. Fluidized bed type

Subtopic:  Large Scale Production: II | Large Scale Production |
 75%
From NCERT
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What is true about the steps of PCR shown in the diagram given below?


 

I: Step A occurs at the temperature of 95-98°  C
II: Step B occurs at the temperature of 55° C
III: Step C occurs at the temperature of 72° C

1. l and ll only
2. l and lll only
3. ll and lll only
4. l, ll and lll

Subtopic:  Large Scale Production: I | Large Scale Production |
 67%
From NCERT
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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%
From NCERT
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 |
 91%
From NCERT
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%
From NCERT
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 |
 96%
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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