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14 Mar 2018

The promoter is an important sequence for transcription of a gene. Which of these components binds to the promoter of a eukaryotic gene to allow transcription to begin? Select all that are correct.

A. Ribosomal subunits
B. A start codon
C. DNA polymerase enzyme
D. General transcription factors
E. RNA polymerase enzyme

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Sixta Kovacek
Sixta KovacekLv2
15 Mar 2018
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Related questions

38. Which bacterial RNA polymerase synthesizes tRNA?

a. RNA polymerase I

b. RNA polymerase II

c. RNA polymerase III

d. Core enzyme

e. Promoter

39. In what part of the transcription process do transcription factors participate?

a. the binding of RNA polymerase to the DNA template

b. transcription initiation

c. elongation

d. termination

e. all of the above

Eukaryotic transcription normally takes place on a chromatin template at nuclease-accessible sites.(True/False)

*After promoter clearance by RNA polymerase II:

A) all associated factors remain bound to the polymerase for elongation.

B) a subset of factors remain at the promoter region.

*Which of the following statements is FALSE?

A) RNA polymerase II is responsible for the transcription of genes encoding protein-coding sequences only.

B) Many promoters recognized by RNA polymerase II contain regulatory elements several kbp upstream of the initiation site.

C) TFIIB has a role in converting a closed-promoter into an open-promoter complex.

D) The C-terminal domain of the largest subunit of RNA pol II undergoes extensive phosphorylation prior to transcription elongation.

E) A multiprotein complex is involved in communication between upstream control elements and proteins bound at the promoter.

C) no further elongation factors are acquired by the polymerase.

D) no further chromatin remodeling is required.

E) transcription continues until the polymerase reaches the poly (A) tail

*In eukaryotes RNA polymerase I transcribes all of the ribosomal RNA components.(TRUE/FALSE)

1) In Eukaryotes, repetitive sequence inclues:
A) Centromere sequences
B) Telomere sequences
C) All of the above

2) Satelit DNA:
A) Was orignally discoverd in E. Coli
B) Represents plasmid DNA sequences
C) Contains repetitive DNA sequences
D) Has the same density as main band DNA
E) All of the above

3) Inversions _____ The number of crossover offspring.
A) Decrease
B) Increase
C) Do not change
(I Believe the answer is "C" ^. can you explain why?)

4) In human genome, repetitive DNA is estimated to be ___ of the total genome.
A) .1%
B) 1%
C) 10%
D) 50%
E) 90%

5) In E. Coli, the promoter sequence:
A) Contains a short AT rich sequence
B) Binds transcription factors
C) All of the above

6) In eukaryotic transcription:
A) Transcription factors bind to the promoter and then RNA polymerase binds.
B) Transcription factors bind to RNA polymerase which then binds to the promoter
C) Transcription factors are NOT required to initiate transcription

Explanation for each would help immensely. THANK YOU in advance for your time!!!

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