Lac and Trp Operon
Quiz
•
Science
•
11th Grade
•
Practice Problem
•
Easy
Standards-aligned
Lisa Thompson
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Reformat to indicate that answer completes stem: "If glucose is absent but lactose is present, the lac operon will be____________."
activated
repressed
partially activated
mutated
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What would happen if the operator sequence of the lac operon contained a mutation that prevented the repressor protein from binding the operator?
In the presence of lactose, the lac operon will not be transcribed.
In the absence of lactose, the lac operon will be transcribed.
The cAMP-CAP complex will not increase RNA synthesis.
The RNA polymerase will not bind the promoter.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator?
In the absence of tryptophan, the genes trpA-E will not be transcribed.
In the absence of tryptophan, only genes trpE and trpD will be transcribed.
In the presence of tryptophan, the genes trpA-E will be transcribed.
In the presence of tryptophan, the trpE gene will not be transcribed.
Tags
NGSS.HS-LS3-2
4.
OPEN ENDED QUESTION
1 min • 1 pt
Repressor of lac operon can be bound by _____________________ which induces changes in its __________________ and repressor is no longer able to inhibit the lac operon transcription. 2p
Evaluate responses using AI:
OFF
5.
OPEN ENDED QUESTION
1 min • 1 pt
What happens with trp operon transcription when there is a high concentration of tryptophan and E.coli does not need to synthesis it anymore? Explain inhibiting system using corepressor and repressor of trp operon.4p
Evaluate responses using AI:
OFF
6.
OPEN ENDED QUESTION
1 min • 1 pt
1. What does a corepressor do? 1p
Evaluate responses using AI:
OFF
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these operons is anabolic?
Lac
Ara
Trp
Phe
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