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WorksheetsLac Operon, Test I B.Sc. III sem
Total questions: 15
Worksheet time: 10mins
In the lac operon the inducer is
allolactose
glucose
galactose
all of the above
The sequence where lac repressor binds on operon is called_______
promoter
lac z
operator
lac I
Which of the following is not a structural gene?
lac z
lac y
lac a
lac I
What does the lactose do to the Operon?
Blocks transcription because of the energy it provides
Allows the repressor to be unbinded from the Operator.
The lactose binds to the lactose and stops transcription
Allows for the transcription to speed up
Which one condition is not possible about the substrates concentrations according to the picture
Low glucose
Low lactose
High cAMP
High glucose
Low lactose
Low cAMP
High glucose
High lactose
Low cAMP
Low glucose
High lactose
High cAMP
IPTG is a
gratuitous inducer
allosteric inducer
feedback inhibition
all of the above
Who formulated the operon model
Oparin Haldane
Bedal and Tatum
Jacob and Monod
Lamarck
Operon is regulated
only positively
only negatively
both positively and negatively
none of the above
What is the full form of CRP in lac operon
Catabolite Repressor Protein
cAMP receptor Protein
cAMP repressor Protein
Catabolite gene activator protein
