Operon
Quiz
•
Science
•
11th Grade
•
Practice Problem
•
Hard
Standards-aligned
Lisa Thompson
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following describes an operon that is active and becomes inactivated by a molecule binding to the repressor?
inducible operon
repressible operon
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A protein that binds to the operator and blocks the RNA polymerase
inducer protein
repressor protein
activator protein
structural protein
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The location of an operon that functions as an "on/off" switch and is where a repressor would bind
promoter
repressor
operator
structural gene
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is 4 in the diagram?
RNA polymerase
Inducer
Repressor
Operator
Tags
NGSS.HS-LS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the role of operons in prokaryote gene expression?
It makes the genes prokaryotes be turned on
It accounts for the regulation of gene activity in response to the needs of the cells
To make DNA for the gene
To make the gene turn of and off
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The lac operon is an example of an inducible operon. Which of the following describes the process that occurs when lactose is present?
The lactose binds to the repressor which inactivates it and the repressor binds to the operator to turn translation on.
The lactose binds to the repressor which activates it and the repressor releases from the operator to turn translation on.
The lactose binds to the repressor which inactivates it and the repressor releases from the operator to turn translation on.
The lactose binds to the repressor which activates it and the repressor binds to the operator to turn translation on.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the lac operon the inducer is
allolactose
glucose
galactose
all of the above
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