GCD 3022 Exam III Naoko Shima UMN Content|
Ques ons and answers| updated
gene regula on refers to the ability of gene expression to (. ) depending on different condi ons.
Vary
The most common way to regulate gene expression in bacteria is by influencing the ini a on of
(. ). This means the rate of RNA synthesis can be (. )
transcrip on, increased or decreased
Genes that are unregulated are termed
cons tu ve genes
Gene regula on can happen anywhere during the process of gene expression. True or false?
True
During transcrip on in bacteria, (. ) proteins bind to DNA and control the rate of (. ).
gene c regulatory, transcrip on
Transcrip onal regula on in bacteria involves two main proteins called
Ac vators and repressors
Nega ve control refers to regula on done by a (. ) protein
repressor
Posi ve control refers to regula on done by a (. ) protein
ac vator
Small effector molecules affect transcrip onal regula on. They bind to regulatory proteins but
not to
DNA directly
S.E.M can increase transcrip on. These molecules are called
inducers
S.E.M can decrease transcrip on. These molecules are called
, inhibitors
Inhibitors may bind to ac vators and (. ) them from binding to the DNA
prevent
A corepressor ( a type of SEM that decreases transcrip on) may bind to a repressor and (. ) in
binding to DNA
assist
an inducer may bind to an ac vator and (. ) them in binding to DNA
assist
an inducer may bind to a repressor and (. ) them from binding to DNA
prevent
Genes that are regulated by inducers are termed
inducible
Genes that are regulated by repressors are termed
repressible.
Is the lac operon an example of an inducible gene or a repressible gene?
inducible
A repressor is a __________ that _________ transcrip on.
regulatory protein, inhibits
Which of the following combina ons will cause the rate of transcrip on to increase?
A repressor plus an inducer
A repressor plus a corepressor
An ac vator plus an inhibitor
A repressor plus an inducer
This is a group of two or more genes that are under the transcrip onal control of a single
promoter
an operon
an operon encodes a (. ) mRNA, which is an RNA that contains the sequences of two or more
genes
Ques ons and answers| updated
gene regula on refers to the ability of gene expression to (. ) depending on different condi ons.
Vary
The most common way to regulate gene expression in bacteria is by influencing the ini a on of
(. ). This means the rate of RNA synthesis can be (. )
transcrip on, increased or decreased
Genes that are unregulated are termed
cons tu ve genes
Gene regula on can happen anywhere during the process of gene expression. True or false?
True
During transcrip on in bacteria, (. ) proteins bind to DNA and control the rate of (. ).
gene c regulatory, transcrip on
Transcrip onal regula on in bacteria involves two main proteins called
Ac vators and repressors
Nega ve control refers to regula on done by a (. ) protein
repressor
Posi ve control refers to regula on done by a (. ) protein
ac vator
Small effector molecules affect transcrip onal regula on. They bind to regulatory proteins but
not to
DNA directly
S.E.M can increase transcrip on. These molecules are called
inducers
S.E.M can decrease transcrip on. These molecules are called
, inhibitors
Inhibitors may bind to ac vators and (. ) them from binding to the DNA
prevent
A corepressor ( a type of SEM that decreases transcrip on) may bind to a repressor and (. ) in
binding to DNA
assist
an inducer may bind to an ac vator and (. ) them in binding to DNA
assist
an inducer may bind to a repressor and (. ) them from binding to DNA
prevent
Genes that are regulated by inducers are termed
inducible
Genes that are regulated by repressors are termed
repressible.
Is the lac operon an example of an inducible gene or a repressible gene?
inducible
A repressor is a __________ that _________ transcrip on.
regulatory protein, inhibits
Which of the following combina ons will cause the rate of transcrip on to increase?
A repressor plus an inducer
A repressor plus a corepressor
An ac vator plus an inhibitor
A repressor plus an inducer
This is a group of two or more genes that are under the transcrip onal control of a single
promoter
an operon
an operon encodes a (. ) mRNA, which is an RNA that contains the sequences of two or more
genes
