TLS Online TPP Program

#Question id: 9161


When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes ________.

#Unit 9. Diversity of Life Forms
  1. in biomes at different latitudes
  2. in a community through different seasons
  3. in an ecosystem as it evolves over time
  4. across the United States from east to west
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TLS Online TPP Program

#Question id: 4659

#Unit 3. Fundamental Processes

Many bacterial responses are controlled by two component regulatory systems. What will happen at the high concentration of glutamine and at the low concentration of glutamine?

a) At high concentrations glutamine binds to a sensor domain of NtrB conformational change in the protein that inhibits its histidine kinase activity

b) NtrC phosphorylation takes place causes a conformational change in NtrC that unmasks the NtrC DNA-binding domain so that it can bind to the glnA enhancers

c) At the same time, the regulatory domain of NtrC blocks its DNA-binding domain from binding the glnA enhancers

d) At low concentrations of glutamine dissociates from the sensor domain in the NtrB protein, leading to activation of a histidine kinase transmitter domain

Which of the following given combination is correct?

TLS Online TPP Program

#Question id: 4561

#Unit 3. Fundamental Processes

Which factor recruits capping enzyme?

TLS Online TPP Program

#Question id: 4560

#Unit 3. Fundamental Processes

TFIIH general is a general transcription factor phosphorylates the CTD multiple times on heptapeptide sequence such as

TLS Online TPP Program

#Question id: 4559

#Unit 3. Fundamental Processes

The 5’Cap is added to the eukaryotic nascent RNAs shortly after

TLS Online TPP Program

#Question id: 4558

#Unit 3. Fundamental Processes

Classes of RNA transcribed by the three eukaryotic nuclear RNA Polymerase;

                    Polymerase

             RNA Transcribed     

A. RNA polymerase I                   

i) tRNAs, 5S rRNA, snRNA, U6, 7S RNA

B. RNA polymerase II

ii) Pre-rRNA 28S, 18SrRNA,  5.8SrRNAs

C. RNA polymerase III

iii) mRNA, snRNAs, siRNAs, miRNAs

 Match the following correct combination given above combinations;

TLS Online TPP Program

#Question id: 4557

#Unit 3. Fundamental Processes

In eukaryotic transcription RNA polymerase II is transcribed