
BIO 112 Chapter 17
Quiz
•
Biology
•
University
•
Practice Problem
•
Hard
Zain Khashan
Used 2+ times
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67 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In eukaryotes, there are several different types of RNA polymerases. Which type is involved in transcription of mRNA for a globin protein?
RNA polymerase I
RNA polymerase II
RNA polymerase III
RNA polymerase IV
Primase
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which molecule or reaction supplies the energy for polymerization of nucleotides in the process of transcription?
The interaction between RNA polymerase and the promoter
The phosphate bonds in the nucleotide triphosphates that serve as substrates
The energy released when hydrogen bonds are broken as the DNA molecule is unwound
ATP only
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Death cap mushrooms produce a substance called alpha-amanitin. Alpha-amanitin efficiently blocks synthesis of mRNA, but not of tRNA or rRNA, in eukaryotic organisms. This is possible because alpha-amanitin efficiently interferes with _______.
the action of RNA polymerase I, but not RNA polymerase II or III
RNA polymerase III, but not RNA polymerase I and II
the action of RNA polymerases I and II, but not RNA polymerase III
the action of RNA polymerase II, but not RNA polymerase I or III
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You want to engineer a eukaryotic gene into a bacterial colony so the bacteria express the gene. What must be included in addition to the coding exons of the gene?
The introns
Eukaryotic polymerases
A bacterial promoter sequence
Eukaryotic ribosomal subunits
Eukaryotic tRNAs
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In eukaryotic cells, transcription cannot begin until _______.
A) the two DNA strands have completely separated and exposed the promoter
B) several transcription factors have bound to the promoter
C) the 5' caps are removed from the mRNA
D) the DNA introns are removed from the template
E) DNA nucleases have isolated the transcription unit
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The enzyme complex associated with DNA in the associated figure is __________.
helicase
DNA polymerase
RNA polymerase
topoisomerase
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In E. coli, if RNA polymerase is missing __________, then transcription initiation would not occur at the appropriate initiation sites.
A) amino acids
B) mRNA
C) sigma
D) the core enzyme
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