Which of the following antibodies is predominantly present in tears, saliva and mucous

TLS Online TPP Program

#Question id: 18844

#Part-A Aptitude & General Biotechnology

In the extraction of DNA from cell with to remove the high protein content from the cell , before phenol treatment which of the following treatment is done 

TLS Online TPP Program

#Question id: 18845

#Part-A Aptitude & General Biotechnology

The action of EDTA in EDTA-lysozyme treatment in bacterial DNA extraction is

TLS Online TPP Program

#Question id: 18846

#Part-A Aptitude & General Biotechnology

For an application where you require a sample of your target protein at high purity, what would be a good purification strategy? Assume that your starting point is E. coli cells in which the target protein fused to an affinity tag has been over-expressed.

TLS Online TPP Program

#Question id: 18847

#Part-A Aptitude & General Biotechnology

You know that the protein you want to purify from a natural source forms a multimer with multiple sub-units giving a molecular weight in solution much bigger than visualised denatured on SDS-PAGE. There is only a small amount of the target protein in the total protein sample. Which of the following is an appropriate purification strategy?

TLS Online TPP Program

#Question id: 18848

#Part-A Aptitude & General Biotechnology

You find that your protein sample loses activity during storage. What can you do about this?

TLS Online TPP Program

#Question id: 18849

#Part-A Aptitude & General Biotechnology

Which of these techniques is often considered a suitable "polishing" step in a protein purification strategy?