Exercise: Transcription And Regulation

Questions for: Transcription And Regulation

Each tRNA molecule has a cloverleaf secondary structure consisting of
A:
three stem loops
B:
two stem loops
C:
four stem loops
D:
either (a) or (b)
Answer: A
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Multiple copies of 5S genes, located at a chromosomal site distinct from the other rRNA genes
A:
are transcribed by rRNA polymerase III and the 5S rRNA
B:
are transcribed by rRNA polymerase II
C:
are transcribed by rRNA polymerase I and the 5S rRNA
D:
are transcribed by DNA polymerase I
Answer: A
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Which of the following is necessary for transcription to occur?
A:
DNA molecule
B:
RNA polymerase
C:
DNA polymerase
D:
Both DNA & RNA polymerase
Answer: D
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Transcription by E. coli polymerase occurs in
A:
four phases known as initiation, propagation, elongation and termination
B:
three phases known as initiation, elongation and termination
C:
two phases known as initiation and termination
D:
none of the above
Answer: B
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Enhancers are regions that
A:
bind RNA polymerase
B:
are adjacent to the TATA box
C:
are CAT box binding proteins
D:
modulate transcription
Answer: D
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