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27 Oct 2018

What general transcription factor is most often affected by regulatory transcription factors?

TFIIF

TFIIE

TFIID

TFIIB

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Nestor Rutherford
Nestor RutherfordLv2
28 Oct 2018
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Related questions

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)

Answer the following True or False questions and briefly explain your answers.

True or False EXPLAIN: Most human cells, in a single individual, contain the same amount and type of DNA

True or False EXPLAIN: Most human cells, in a single individual, contain the same amount and type of protein.

True or False EXPLAIN: Once a gene is transcribed, it is always translated immediately.

True or False EXPLAIN: RNA polymerase binds to the promoters of all genes at all times, so that it is prepared for transcription.

True or False EXPLAIN: Some transcription factors are general (they play a role in the transcription of most or all genes), while other transcription factors are specific to just a few genes.

True or False: EXPLAIN Turning genes on at the right time and place requires both specific regulatory DNA sequences and specific regulatory proteins.

1. Tissue-specific patterns are determined by _______

a.

a combination of tissue-specific genes only present in the cells that form the tissue.
b.

a combination of tissue-specific regulatory sequences only present in the cells that form the tissue.
c.

a combination of tissue-specific transcription factors only present in the cells that form the tissue.

d. a combination of tissue-specific silencers only present in the cells that form the tissue.

2. The rate of transcription is determined by all the interactions between activators, repressors, general transcription factors and RNA polymerase.

True

False

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