Operons Flashcards
1
Q
Repressible
A
On until turned off
2
Q
Inducible
A
Off unless turned on
3
Q
Operator
A
Controls access RNA Polymerase has to structural genes
4
Q
What binds to operator?
A
Regulatory protein binds to it
5
Q
Operon
A
Constitute of entire segment but Reg. gene
6
Q
Repressor
A
Binds to operator so it can turn off
7
Q
Regulatory gene
A
Synthesizes protein that can be a repressor or an activator
8
Q
How can you activate an inactive repressor?
A
With corepressor
9
Q
Corepressor
A
Binds to protein to activate or inactivate
10
Q
Inducer
A
Inactivates a repressor
11
Q
Activator
A
Promoted certain genes to be transcribed
12
Q
Promoter
A
Where RNA polymerase binds go to start transcription
13
Q
RNA polymerase
A
Makes mRNA from DNA
14
Q
Advantage because
A
It needs a single on and off switch
