BIOL 102 Study Guide - Final Guide: Rna Polymerase Iii, Stem-Loop, Rna Polymerase Ii

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carmineduck394

24 Jul 2016

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Describe the process of transcription in prokaryotes o o. 3 phases of transcription in prokaryotes: initiation, elongation and termination. Initiation: involves the binding of sigma to the -10 and -35 boxes of a promoter causing the dna helix to open. Elongation: rna polymerase moves along the template strand of the dna in a 3" to 5" direction, synthesizing rna in a 5" to 3" direction, until it reaches termination signal o. Describe the similarities and differences between prokaryotic and eukaryotic transcription. 1; rna polymerase moves along the template strand of the. Dna in a 3" to 5" direction, synthesizing. Tata box about 30 base pairs from the transcription start site. Rna polymerase holoenzyme determines which type of genes will be transcribed allows bacterial cells to control which genes are expressed mrna processing. None; the information in dna is converted to mrna directly (end of transcription results in a mature mrna that is ready to be translated into a protein).

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

periwinklehorse209

Order the following choices to examine the process of transcription.

- RNA polymerase moves along the template strand of DNA adding complementary RNA nucleotides, extending the mRNA.

-RNA polymerase binds at the promoter region just upstream from the gene.

-RNA polymerase unwinds the DNA at the promoter site and begins to transcribe the template strand of DNA.

-Transcription continues until a termination site in the DNA is reached.

-The mRNA transcript is released.

Which type of RNA is unique to eukaryotes?

		mRNA
		rRNA
		tRNA
		snRNA
		Its a trick, all cells have all four types of RNA.

1 points

QUESTION 2

The region of DNA to which RNA polymerase binds to initiate transcription is the:

		origin
		promoter
		enhancer
		none of the above are correct

1 points

QUESTION 3

Holoenzyme:

		is RNA polymerase core enzyme.
		is sigma factor.
		is core plus sigma factor.
		none of the above are correct.

1 points

QUESTION 4

Which of these is formed FIRST when RNA polymerase binds to a promoter?

		The closed promoter complex
		The open promoter complex
		A rho-independent terminator
		none of the above are correct.

1 points

QUESTION 5

A hairpin loop followed by a run of Us:

		is the sequence formed in the sense strand of a gene using a rho-independent terminator.
		is the sequence recognized by the rho protein.
		is the structure formed in RNA that causes rho-independent termination.
		is formed immediately after the open promoter complex is formed.

1 points

QUESTION 6

RNA polymerase:

		reads the template strand of the DNA in the 3' to 5' direction.
		synthesizes the RNA in the 5' to 3' direction.
		can begin transcription without a primer.
		all of the above are correct.

1 points

QUESTION 7

Which of the following statements is FALSE?

		Bacteria like E. coli have only one type of sigma factor.
		RNA polymerase has no proofreading activity.
		The promoter of a gene is upstream of the RNA-coding region.
		Bacterial transcriptional terminators are copied into RNA to cause termination.

1 points

QUESTION 8

If the template strand of a gene has the sequence 5' ATGCGAT 3', then:

		the RNA produced will have the sequence 5' AUGCGAU 3'.
		the RNA produced will have the sequence 5' UAGCGUA 3'.
		the RNA produced will have the sequence 5' AUCGCAU 3'.
		None of the above are correct.

1 points

QUESTION 9

The sense strand:

		is the lagging strand
		is also the template strand.
		always goes left to right.
		none of the above are correct.

1 points

QUESTION 10

Which of these is transcribed but not translated?

		mRNA
		tRNA
		rRNA
		all of the above
		tRNA and rRNA are transcribed but not translated.

please help i am a bit confused

BIOL 102 Study Guide - Final Guide: Rna Polymerase Iii, Stem-Loop, Rna Polymerase Ii

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