Please provide brief (one sentence) answers:
a) The Mycoplasma chromosome codes for 500 genes, yet it has about 20 promoters. Provide a brief explanation for how this is possible.
b) How many seconds would it take the bacterial RNA polymerase to synthesize an mRNA of 5,000 bases?
c) How many mistakes would the bacterial RNA polymerase make while synthesizing an mRNA of 30,000 bases?
d) Sigma (?) protein by itself does not bind to promoter sites. Predict the effect on transcription of a mutation enabling ? to bind tightly to the â35 region in the absence of other subunits of RNA polymerase.
e) What is the structure of the most common transcription terminator signal in E. coli, and what are 2 conserved features of the RNA sequence of this structure?
f) Why is RNA synthesis not as carefully monitored for errors, as is DNA synthesis?
Please provide brief (one sentence) answers:
a) The Mycoplasma chromosome codes for 500 genes, yet it has about 20 promoters. Provide a brief explanation for how this is possible.
b) How many seconds would it take the bacterial RNA polymerase to synthesize an mRNA of 5,000 bases?
c) How many mistakes would the bacterial RNA polymerase make while synthesizing an mRNA of 30,000 bases?
d) Sigma (?) protein by itself does not bind to promoter sites. Predict the effect on transcription of a mutation enabling ? to bind tightly to the â35 region in the absence of other subunits of RNA polymerase.
e) What is the structure of the most common transcription terminator signal in E. coli, and what are 2 conserved features of the RNA sequence of this structure?
f) Why is RNA synthesis not as carefully monitored for errors, as is DNA synthesis?
