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TLS Online TPP Program

#Question id: 1184

The order of events in a signaling pathway can be determined by the analysis of mutants. Cells that express a mutant defective Raf protein cannot be stimulated to proliferate uncontrollably by constitutively active RasD (dominant active). This indicates:

#Unit 4. Cell Communication and Cell Signaling

  1. quiescent cells can be induced to proliferate in the absence of growth factors if they contain a constitutively inactive mutant Raf protein.

  2. Raf is upstream of Ras in the signaling pathway.

  3. Ras is upstream of Raf in the signaling pathway.

  4. Ras mutants are recessive to Raf mutants.

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TLS Online TPP Program

#Question id: 19049

#Unit 13. Methods in Biology

What is the nature of mobile phase in reverse phase chromatography? 
TLS Online TPP Program

#Question id: 19050

#Unit 13. Methods in Biology

The relative adsorption of each component of the mixture is expressed in terms of its
TLS Online TPP Program

#Question id: 19051

#Unit 13. Methods in Biology

Select the correct statement regarding paper chromatography from the following.
TLS Online TPP Program

#Question id: 19052

#Unit 13. Methods in Biology

Amino acids detected by spraying the plate with ninhydrin solution is an example of
TLS Online TPP Program

#Question id: 19053

#Unit 13. Methods in Biology

The principle on which thin layer chromatography is based is that the ____________
TLS Online TPP Program

#Question id: 19054

#Unit 13. Methods in Biology

Which is not an application of TLC?