Course

Biochemistry

Study Pack

Set 29 Regulation Of Gene Expression

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Question 1

(Multiple Choice)

Free
If both lactose and glucose are present in large amounts,which of the following scenarios would result?

A)lac repressor bound to promoter,CRP bound to promoter,no lac operon transcription
B)lac repressor bound to inducer,CRP bound to promoter,no lac operon transcription
C)lac repressor bound to inducer,CRP bound to promoter,lac operon transcribed
D)lac repressor bound to inducer,CRP not bound,no lac operon transcription
E)lac repressor bound to inducer,CRP not bound,lac operon transcribed

Answer

Question 2

(Multiple Choice)

Free
Bacteriophage λ\lambda establishment of lysogeny in E.coli cells requires a high concentration of _____.This is achieved by the ____ protein binding to the PRE regulatory site.

A)Cro;cI
B)Cro;cII
C)Cro;cIII
D)cI;cII
E)cI;cIII

Answer

Question 3

(Multiple Choice)

Free
The bromodomain of nucleosome remodeling complexes binds to ____________ histones while the chromodomain binds to ___________ histones.

A)acetylated;methylated
B)acetylated;phosphorylated
C)methylated;acetylated
D)methylated;phosphorylated
E)none of the above

Answer