BIOLOGY 2F03 Study Guide - Midterm Guide: Tata-Binding Protein, Rna Polymerase Ii, Rho Factor

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magentamacaw163

16 Oct 2013

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Change of one base can cause many changes in diff proteins. Change in one base (third base) will not affect much since dna is redundant. One type forms hairpin, one single strand dna. Has ternary complex will be disrupted by any formation of bulky structure. Holoenzyme has to move along, binds loosely to dna. Same holoenzyme with diff sigma factors locate diff genes. In cell dna, has a lot of dna available. Form open complex, let go of sigma factor. Has 3 rnap for diff kinds of genes. Rnap ii polymerase that is responsible for making all mrna. If there are any molecules that go in and bind to complex. Don"t need to know too much about this. Actinomycin d not specific, just intercalates and bind tightly to dna. Drug designs based on very fundamental diff btw diff processes. Since bacterial translation diff enough the human translation.

Related Questions

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

BIOLOGY 2F03 Study Guide - Midterm Guide: Tata-Binding Protein, Rna Polymerase Ii, Rho Factor

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