
AP Biology Operons
Authored by Lisa Thompson
Science
11th Grade
NGSS covered
Used 2+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
We know that lactose has a positive impact on the activity of the lac operon. Tryptophan’s presence has a ________________
Positive feedback
Negative feedback
No difference
Highly positive impact
Tags
NGSS.HS-LS1-3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which segments of the attenuator together form the repression loop?
Segment 1-2
Segment 2-3
Segment 3-4
Segment 1-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these properties do not agree with trp operon attenuator?
It brings about repression of trp operon
It consists of one stem loop system
It has two codons for tryptophan in sequence
Ribosome stalls at the attenuator
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the Ara operon regulation site is actually preventing RNA polymerase from binding and producing the Ara genes BAD?
O1
O2
P
Z
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these Ara genes is a mode of feedback autoregulation?
Ara A
Ara B
Ara C
Ara D
Tags
NGSS.HS-LS1-3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the Ara promoter regulation is controlled by binding of repressors on the O1 regulating unit?
PA
PB
PC
PD
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the absence of glucose, the binding of CRP-cAMP complex to the region near to the lac promoter will
No significant effect on the transcription of lac genes
Cause the release of RNA polymerase from the promoter
Decrease transcription of lac genes
Increase transcription of lac genes
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