Quiz 16: Rna Processing: Other Post-Transcriptional Events
Biology
Q 1Q 1
Which of the following enzymes removes extra nucleotides from the 5 ends of pre-tRNA?
A)RNase I
B)RNase II
C)RNase III
D)RNase E
E)RNase P
Free
Multiple Choice
E
Q 2Q 2
Most cellular RNase P enzymes have 2 subunits,one protein subunit and I RNA subunit.RNase P from which of the following has no known RNA subunit?
A)human nuclei
B)monkey mitochondria
C)spinach chloroplast
D)yeast nuclei
E)Escherichia coli
Free
Multiple Choice
C
Q 3Q 3
In which of the following organisms is trans-splicing of mRNA known to occur?
A)trypanosomes
B)yeast
C)bacteria
D)mammals
E)plants
Free
Multiple Choice
A
Q 4Q 4
Trypanosome mitochondria contain two types of circular DNA linked together into large networks.These mitochondria are called
A)maxicircles
B)kinetoplasts
C)leucoplasts
D)plastids
E)maxi-mitochondria
Free
Multiple Choice
Free
Multiple Choice
Q 6Q 6
Which of the following techniques was used by Stuart and colleagues to demonstrate mRNA editing?
A)RT-PCR
B)cDNA cloning
C)Northern Blot
D)RNase footprinting
E)mutation analysis
Free
Multiple Choice
Q 7Q 7
RNA editing by nucleotide deamination can occur in which of the following cell types?
A)human brain
B)HIV infected human cells
C)red blood cells
D)Drosophila
E)All of the choices have RNA editing.
Free
Multiple Choice
Q 8Q 8
The function of normally occurring mRNA deamination appears to be the proper
A)cleanup of the mRNA.
B)mRNA folding.
C)mRNA splicing.
D)mRNA modification.
E)protein synthesis.
Free
Multiple Choice
Q 9Q 9
Which of the following processes occurs posttranscriptionally?
A)Cap addition
B)adenosine deamination
C)Poly(A)addition
D)promoter clearance
E)unwinding
Free
Multiple Choice
Q 10Q 10
Under which of the following conditions does TfR mRNA degradation take place?
A)conversion of citrate to isocitrate
B)IRE hairpin loop formation
C)aconitase apoprotein binding to IRES
D)low iron concentrations
E)high iron concentrations
Free
Multiple Choice
Q 11Q 11
RNA interference occurs naturally in human cells during
A)RNA viral replication.
B)DNA viral replication.
C)RNA viral transcription.
D)DNA viral transcription.
E)mRNA translation.
Free
Multiple Choice
Q 12Q 12
Which of the following enzymes is not involved in RNA interference?
A)Dicer
B)Slicer
C)Argonaute
D)Argonaute2
E)RNase P
Free
Multiple Choice
Free
Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Short Answer
Q 18Q 18
________-splicing is the process by which exons from different genes are spliced together to form the mature mRNA.
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Short Answer
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Short Answer
Q 20Q 20
If you were to treat mammary gland tissue with prolactin you would expect to see an increase in casein mRNA __________________.
Free
Short Answer
Q 21Q 21
MicroRNAs function to silence gene expression primarily by blocking ____________ of targeted mRNAs.
Free
Short Answer
Q 22Q 22
miRNA synthesis involves the cleavage of the double stranded stem portion of a precursor RNA by the enzyme ____________.
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Short Answer
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Short Answer
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Short Answer
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True False
Q 26Q 26
Transposition of transposons is blocked in animal germ cells by a ping-pong and mRNA destruction mechanism involving piRNAs.
Free
True False
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True False
Q 28Q 28
Inactivation of RNase genes involved in tRNA 3 end maturation is lethal to bacterial cells.
Free
True False
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True False
Q 30Q 30
Flowering plants have two nuclear RNA RNA polymerases,Iv and V,that are not found in animals and fungi.
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True False
Q 31Q 31
Cellular mRNA levels often correlate more closely with transcription rate than with transcript stability.
Free
True False
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True False
Q 33Q 33
Gene silencing by RNAi can target the control region of a gene by being involved in DNA methylation.
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True False
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True False
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True False