TLS Online TPP Program

#Question id: 18852


What is the starting point for selection of a suitable IEX matrix for purification of a recombinant protein?

#Part-A Aptitude & General Biotechnology
  1. Prediction of isoelectric point (pI) from the amino acid sequence
  2. Test protein binding to an IEX matrix at a range of pHs and salt concentrations
  3. Test protein binding to a selection of anion and cation exchange matrices
  4. Pass your sample through a preparative column and elute with a salt gradient
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TLS Online TPP Program

#Question id: 8924

#Part-B Specialized Branches in Biotechnology

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?
1. Protostomes invade terrestrial environments.
2. Cambrian explosion occurs.
3. Deuterostomes invade terrestrial environments.
4. Vertebrates become top predators in the seas.

TLS Online TPP Program

#Question id: 8925

#Part-A Aptitude & General Biotechnology

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians

TLS Online TPP Program

#Question id: 8926

#Part-A Aptitude & General Biotechnology

Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that

TLS Online TPP Program

#Question id: 8926

#Part-B Specialized Branches in Biotechnology

Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that

TLS Online TPP Program

#Question id: 8927

#Part-A Aptitude & General Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

TLS Online TPP Program

#Question id: 8927

#Part-B Specialized Branches in Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that