A necessary and essential feature of RNA polymerases is their
ability to home in to promoters...
A necessary and essential feature of RNA polymerases is their
ability to home in to promoters to initiate
transcription, and then transition to transcription elongation.
Explain the biological context of the above statement.
Describe briefly the structure and subunits of prokaryotic and
eukaryotic RNA polymerases. Describe in detail at least three ways
that prokaryotic and eukaryotic transcription differ from each
other.
Describe briefly the structure and subunits of prokaryotic and
eukaryotic RNA polymerases. Describe in detail at least three ways
that prokaryotic and eukaryotic transcription differ from each
other.
One way to discover promoters is through an experiment called
RNA polymerase protection assay, in which RNA polymerase binds to a
gene, is cross-linked to the DNA, and then the DNA is subjected to
fragmentation, which breaks apart any DNA that is not protected by
cross-linked protein. Explain why this would help to identify
promoters in genes.
QUESTION 38
Viral capsules are studded with
a. RNA polymerases
b. Reverse transcriptase
c. Proteins which bind to host cell surface proteins
d. Double-stranded DNA
2 points
QUESTION 39
The scientists who worked out the structure of DNA and received
the Nobel Prize for this discovery are:
a. Darwin and Newton
b. Hershey and Chase
c. Morgan, Griffith and Avery
d. Watson, Crick and Wilkins
2 points
QUESTION 40
The two strands of the DNA double helix are...
16. Which of the following polymerases do not have proof
reading ability?
a. DNA polymerase I
b. DNA polymerase II
c. DNA polymerase III
d. DNA polymerase a (alpha)
e. DNA polymerase d (delta)
17. Which of teh following may detect G:T mismatch in
bacterial genome?
a. exonuclease I
b. MutS
c. DNA polymerase III
d. Uracil DNA glycosidase
e. uvrABC excinuclease
18. Which of the following is the primary target of
ciprofloxacin?
a. DNA topoisomerase II (DNA gyrase)
b....
Eukaryotic cells produce three distinct RNA polymerases: pol I,
pol II, and pol III. Which of the following statements is NOT true
about eukaryotic RNA polymerases?
A) Pol II, with twelve subunits on its own, is capable of
initiating transcription.
B) Pol III is responsible for the transcription of all
tRNAs.
C) Pol I carries out the transcription of the 45S pre-rRNA
transcript.
D) Pol III is responsible for the transcription of ribosomal 5S
rRNA.
1.
The RNA virus's ability to produce tumors is related to the
presence of_________?
2. ___________ cause release of cytokins, which cause fever,
nausea, and other symptoms; e.g., toxic shock syndrom toxin.
3. Invasive__________ streptococci cause severe and rapid
tissue destruction.
Capital markets and the ability to raise funds for corporate
uses are essential to the U.S. economic system. For this
assignment, imagine that you have $25,000 to invest in U.S.
companies. You are buying used stock. The company got the money
when it issued the stock originally. You will be buying it from an
existing owner. You are investing, or buying, the stock because you
believe the company will make money and pay you a dividend in cash.
Each share...
One essential trait of an effective leader is the ability to be
both task oriented and relationship oriented. Most leaders are
either task or relationship oriented; being competent at both can
be very challenging. Which of these two options is your stronger
orientation? If you were in a leadership position, how would you
strengthen the weaker option? If you were the leader of a small
business (50 employees), would you adopt a centralized or
decentralized structure for your organization? Explain...