Chapter 14 Keywords Flashcards
a gene whose expression increases when a
particular substance is present
Inducible gene
A DNA binding protein binds near the gene
and turns down the level of expression
Negative Control
A gene that is expressed continually
Constitutive Gene
The segment of DNA to which the
repressor protein binds; it controls the
expression of the genes adjacent to it
Operator
A mechanism for the regulation of
transcription of some bacterial operons by
aminoacyl-tRNAs
Attenuation
A small molecule that inhibits the synthesis
of a repressible enzyme
Corepressor
A unit of genetic material that functions in a coordinated manner by means of an operator, a promoter, and one or more structural genes that are transcribed together
Operon
A small molecule that stimulates the
synthesis of an inducible enzyme
Inducer
A protein coded for by a regulator gene that
can bind to the operator and inhibit
transcription
Repressor Protein
two species competing for the same
resources cannot coexist
Competitive Exclusion
A DNA binding protein binds near the gene
and turns up the level of expression
Positive Control
a gene whose expression decreases when
a particular substance is present
Repressible gene
