Operons

Quiz
•
Science
•
11th Grade
•
Hard
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The "on/off" switch for an operon is called the
promoter
repressor
operator
gene
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For a repressible operon to be transcribed, which of the following must be true?
corepressor must be present.
RNA polymerase and the active repressor must be present.
RNA polymerase must bind to the promoter, and the repressor must be inactive.
RNA polymerase cannot be present, and the repressor must be inactive.
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
What is 4 in the diagram?
RNA polymerase
Inducer
Repressor
Operator
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the lac operon, the genes within the operon will be expressed if:
lactose is absent in the cell
galactose is present in the cell
lactose is present in the cell
glucose is absent in the cell
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is 5 in the diagram?
RNA polymerase
Inducer
Repressor
Operator
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