a) Which two of the following are functions of the RNA polymerase ?subunit? b) How would transcription be affected if the ? subunitwere part of the ?2?? \' core? c) Which would you expect to havemore types of ? factors
The RNA polymerase holoenzyme alpha 2 beta beta' sigma carries out transcription in prokaryotes, Which two of the following are functions of the RNA polymerase subunit? to decrease the affinity of RNA polymerase for most DNA to increase the rate of translation to form part of the core RNA polymerase enzyme to recognize the promoter DNA sequence to terminate transcription How would transcription be affected if the sigma subunit were part of the alpha 2 beta beta' core? Transcription would be slower. Transcription would be faster. Transcription speed would not change much. Which would you expect to have more types of sigma factors - a free-living prokaryote in a fluctuating environment or a prokaryote in a relatively stable environment with adequate nutrients? the organism in the fluctuating environment, because it is exposed to more extremes the organism in the stable environment, because increased transcription is needed to metabolize nutrients the organism in the fluctuating environment, because general transcription is faster with more sigma subunits the organism in the stable environment, because nutrients are consistently available for growth and reproduction
