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Operon
notes on board
18 cards·by browncl4
Define Operon.
an operational unit of genes
____=operational unit
Transcription
One way of enzyme control is through a___.
operon
What are 3 categories of enzymes?
Constituative, Inducible and Repressible
The operon is associated with ____ and ___.
Inducible and Repressible
Constituative because they are ______ and are ___. -____
made all the time, part of the constituents of cell -always there
An example of Constituative is ____.
ATP synthase
Inducible-produced when___('induced to be ___') (off until__)
needed, produced, needed
Inducible (___)
lac operon
Repressible stopped when it's ____(__until it's not needed) (__)
not needed, on, trp
Genes usually __
on
Promoter is where ___.
RNA polymerase binds
Operator serves as ___
gate
When repressor protein binds to operator the 'gate' becomes ___= ___
closed, no transcription
open=___
transcription
Structural Genes of enzymes (___)-> ___
they do work, build something
Regulator produces ____
repressor protein
The regulator can be ____-___, etc. but part of ___.
somewhere else- another chromosome, operon