BIO457 LECTURE 7 EXAM 2 WITH VERIFIED QUESTIONS AND ANSWERS|
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The process by which genetic information is transferred from DNA to RNA is called
A. replication
B. Transcription
C. Translation
D. Transversion
E. Transformation - correct answer-B. Transcription
The sequence of bases of a molecule of RNA is converted into a corresponding amino acid
sequence during
A. Replication
B. Transversion
C. Transformation
D. Transcription
E. Translation - correct answer-E. Translation
During the initiation step of transcription, what molecule binds the promoter region of a
DNA molecule?
A. DNA polymerase
B. Reverse transcriptase
C. RNA polymerase
D. DNA primase
E. Topoisomerase - correct answer-C. RNA polymerase
During transcription, the synthesis of the mRNA strand proceeds in which direction?
A. 5' to 3' only
B. 3' to 5' only
C. Both 5' to 3' and 3' to 5'
D. Either 5' to 3' or 3' to 5'
E. First 5' to 3' then 3' to 5' - correct answer-A. 5' to 3' only
Which type of RNA is only found in eukaryotes?
A. mRNA
B. tRNA
C. rRNA
, D. snRNA
E. All of the above - correct answer-D. snRNA
What happens during the elongation step of transcription?
A. A polypeptide chain is formed.
B. An RNA transcript is formed and then drops off the DNA template.
C. An RNA transcript is formed and stays bound to the DNA template.
D. RNA polymerase loosely binds the -35 region of the promoter and unwinds the DNA.
E. The sigma factor dissociates from the core enzyme. - correct answer-B. An RNA
transcript is formed and then drops off the DNA template
Prokaryotic transcription begins when RNA polymerase binds to which site of the gene
region?
A. -35
B. -10
C. +1
D. +10
E. -35 - correct answer-C. +1
Which event occurs at the termination of transcription?
A. RNA synthesis stops
B.Th. RNA chain is released from the DNA.
C. RNA polymerase is released from the DNA.
D. Both A and C
E. All of the above - correct answer-E. All of the above
Which of the following is NOT found in the eukaryotic promoter?
A. -10 box
B. TATA box
C. GC box
D. CAAT box
E. None of these are found in the eukaryotic promoter - correct answer-A. -10 box
In eukaryotes, where does transcription take place?
A. In the cytoplasm
B. Anywhere in the cell
C. In the nucleus
D. In both the cytoplasm and nucleus
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The process by which genetic information is transferred from DNA to RNA is called
A. replication
B. Transcription
C. Translation
D. Transversion
E. Transformation - correct answer-B. Transcription
The sequence of bases of a molecule of RNA is converted into a corresponding amino acid
sequence during
A. Replication
B. Transversion
C. Transformation
D. Transcription
E. Translation - correct answer-E. Translation
During the initiation step of transcription, what molecule binds the promoter region of a
DNA molecule?
A. DNA polymerase
B. Reverse transcriptase
C. RNA polymerase
D. DNA primase
E. Topoisomerase - correct answer-C. RNA polymerase
During transcription, the synthesis of the mRNA strand proceeds in which direction?
A. 5' to 3' only
B. 3' to 5' only
C. Both 5' to 3' and 3' to 5'
D. Either 5' to 3' or 3' to 5'
E. First 5' to 3' then 3' to 5' - correct answer-A. 5' to 3' only
Which type of RNA is only found in eukaryotes?
A. mRNA
B. tRNA
C. rRNA
, D. snRNA
E. All of the above - correct answer-D. snRNA
What happens during the elongation step of transcription?
A. A polypeptide chain is formed.
B. An RNA transcript is formed and then drops off the DNA template.
C. An RNA transcript is formed and stays bound to the DNA template.
D. RNA polymerase loosely binds the -35 region of the promoter and unwinds the DNA.
E. The sigma factor dissociates from the core enzyme. - correct answer-B. An RNA
transcript is formed and then drops off the DNA template
Prokaryotic transcription begins when RNA polymerase binds to which site of the gene
region?
A. -35
B. -10
C. +1
D. +10
E. -35 - correct answer-C. +1
Which event occurs at the termination of transcription?
A. RNA synthesis stops
B.Th. RNA chain is released from the DNA.
C. RNA polymerase is released from the DNA.
D. Both A and C
E. All of the above - correct answer-E. All of the above
Which of the following is NOT found in the eukaryotic promoter?
A. -10 box
B. TATA box
C. GC box
D. CAAT box
E. None of these are found in the eukaryotic promoter - correct answer-A. -10 box
In eukaryotes, where does transcription take place?
A. In the cytoplasm
B. Anywhere in the cell
C. In the nucleus
D. In both the cytoplasm and nucleus
