BIO130H1 Study Guide - Quiz Guide: Dna Replication, Messenger Rna, Conformational Change

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BIO130H1 Full Course Notes

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Take the flow of information diagram/flowchart that you made in the. Optional textbook study question #1 from week 1 and add some key points about eukaryotic transcription. You can annotate your diagram using lecture notes as well as readings from the textbook. The purpose of this diagram is to give you an overview of the key processes involved in information flow in the cell. If you say yes, where (in general) would these mutations have to be to have an effect? (hint: there are several correct answers that you could come up with. ) Direction of synthesis (end to which basic unit is added) Xxx sigma factor recognize the promoter sequence rho dependent: rho protein stops. Rnap rho independent: termination sequence is read a single rnap synthesize all three rna conformational change in the dna helix three rnap the rnap made up of 4 subniits (name of enzyme or factor plus function)

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

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!!!

cerisebadger105

BIO130H1 Study Guide - Quiz Guide: Dna Replication, Messenger Rna, Conformational Change

BIO130H1 Full Course Notes

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