Gene Expression Regulation Quiz

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Questions and Answers

What is the main function of RNA polymerases in transcription?

Producing RNA identical to one strand of DNA
Producing DNA complementary to one strand of RNA
Producing RNA complementary to one strand of DNA (correct)
Producing DNA identical to one strand of RNA

Which type of transcription factors are required for transcription initiation in eukaryotes?

Enhancer-specific transcription factors and silencer-specific transcription factors
General transcription factors and enhancer-specific transcription factors
Activator-specific transcription factors and repressor-specific transcription factors
General transcription factors and gene-specific transcription factors (correct)

What is the function of TFIID in transcription initiation by RNA polymerase II?

Recognition of promoter sequence
Recognition of TATA box (correct)
Enhancement of RNA polymerase activity
Inhibition of RNA polymerase activity

How many subunits does RNA polymerase II consist of?

<p>12 (A)</p> Signup and view all the answers

What is the outcome of transcription?

<p>RNA molecules complementary to one strand of DNA (A)</p> Signup and view all the answers

Flashcards

Function of RNA polymerases

Producing RNA complementary to one strand of DNA.

Transcription factors in eukaryotes

General and gene-specific transcription factors are needed for initiation.

Function of TFIID

Recognizes the TATA box during transcription initiation by RNA polymerase II.

Subunits of RNA polymerase II

RNA polymerase II consists of 12 subunits.

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Outcome of transcription

Results in RNA molecules complementary to one strand of DNA.

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Study Notes

Transcription

The main function of RNA polymerases is to synthesize an RNA molecule from a DNA template during transcription.
In eukaryotes, transcription initiation by RNA polymerase II requires the presence of general transcription factors, which are essential for recruiting RNA polymerase II to the promoter region.
TFIID (Transcription Factor II D) plays a crucial role in transcription initiation by RNA polymerase II, as it recognizes and binds to the TATA box, a specific DNA sequence in the promoter region, and recruits other transcription factors to form the pre-initiation complex.
RNA polymerase II, the primary enzyme responsible for transcribing mRNA, consists of 12 subunits.
The outcome of transcription is the synthesis of a complementary RNA molecule from a DNA template, which is then used as a template for protein synthesis or other cellular processes.

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Description

Test your knowledge of gene expression regulation with this quiz covering lectures 8 to 14. Explore transcription, RNA processing, and the steps from DNA to RNA to protein. Ideal for biology students and enthusiasts.