TLS Online TPP Program

#Question id: 10344


Some of the following caracteristics of Nitrite reductase, which one of the is incorrect?

#Part-B Specialized Branches in Biotechnology
  1. Nitrite is converted into ammonium by NADPH dependent nitrite reductase
  2. It contain two prosthetic groups: an iron–sulfur cluster (Fe4S4) and a specialized heme.
  3. Nitrite (NO2 – ) is a highly reactive, potentially toxic ion immediately transport from the cytosol into chloroplasts in leaves and plastids in roots
  4. Leaf chloroplasts and root plastids contain same type of the nitrite reductase
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TLS Online TPP Program

#Question id: 4395

#Part-A Aptitude & General Biotechnology

Which of the following chemicals would be the most appropriate for the 5’ labeling of a DNA strand with a radioactive phosphate?

TLS Online TPP Program

#Question id: 4480

#Part-B Specialized Branches in Biotechnology

The reason for TBP’s unorthodox recognition mechanism is

TLS Online TPP Program

#Question id: 4481

#Part-B Specialized Branches in Biotechnology

Choose correct statements about recognition mechanism of TBP ;

A. TBP causes the minor groove to be widened to an almost flat conformation

B. It also bends the DNA by an angle of ~120o

C. The interaction between TBP and DNA involves maximum number of hydrogen bonds between the protein and the edges of the base.

D. Much of the specificity is imposed by two pairs of phenylalanine side chains that intercalate between the base pairs at either end of the recognition sequence and drive the strong bend in the DNA.

TLS Online TPP Program

#Question id: 4483

#Part-B Specialized Branches in Biotechnology

TAF42 and TAF62 from Drosophila form a structure similar to that of the

TLS Online TPP Program

#Question id: 4497

#Part-B Specialized Branches in Biotechnology

Elongation, termination of transcription, and RNA processing are interconnected, presumably to ensure their proper coordination,

   Elongation factors

I.    hSPT5

To recruit the 5’ -capping enzyme to the CTD tail of polymerase

 II.   TAT-SF1

To recruits components of the splicing machinery to polymerase with a Ser-2 phosphorylated tail

TLS Online TPP Program

#Question id: 4532

#Part-B Specialized Branches in Biotechnology

Locus control region, or LCR,