
Gene Expression and Regulation
Authored by Lisa Thompson
Science
12th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Regulatory proteins (transcription factors) may
encourage transcription
prevent transcription
stop transcription once its started
either encourage or prevent transcription
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a repressible operon, the corepressor
allows transcription to progress
allow the repressor to prevent transcription
binds to the promoter and transcribes the gene
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is 1 in the diagram?
RNA polymerase
Inducer
Repressor
Operator
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is 2 in the diagram?
RNA polymerase
Inducer
Repressor
Operator
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the top picture the operon is
on
off
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of operon is the trp (tryptophan) operon?
inducible
repressible
positive control
promotor
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is an operon?
a part of a ribsome
a part of a RNA
a unit made up of linked genes that code for proteins needed to do a specific task
needed for dna replication
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