The NtrC protein from E. coli

a. is a σ54 RNA polymerase.             

b. stimulates transcription of the glnA gene.

c. is activated by a protein kinase called NtrB.

d. binds both to an enhancer site upstream of the glnA gene and to RNA polymerase.

e. has ATPase activity.

TLS Online TPP Program

#Question id: 18995

#Unit 13. Methods in Biology

Which of the following is not a characteristic of the syringe pump used in high pressure liquid chromatography?

TLS Online TPP Program

#Question id: 18996

#Unit 13. Methods in Biology

If a sample is volatile between 200 – 300 C, which chromatography is used

TLS Online TPP Program

#Question id: 18997

#Unit 13. Methods in Biology

DDT primarily can be analysed by 

TLS Online TPP Program

#Question id: 18998

#Unit 13. Methods in Biology

Chromatography is a physical method that is used to separate and analyse

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#Question id: 18999

#Unit 13. Methods in Biology

In which type of chromatography, the stationary phase held in a narrow tube and the mobile phase is forced through it under pressure?

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#Question id: 19000

#Unit 13. Methods in Biology

Which of the following cannot be used as an adsorbent in Column adsorption chromatography?