BIO 1201 GREGG EXAM 2 COMPREHENSIVE
STUDY GUIDE FULL QUESTIONS AND
CORRECT ANSWERS
⩥ The nuclear membrane's role in the regulation of gene expression
involves _____.
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
Answer: regulating the transport of mRNA to the cytoplasm (This is the
role of the nuclear membrane in the regulation of gene expression.)
⩥ What is the function of a spliceosome?
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
,Answer: RNA processing (Spliceosomes are involved in RNA
processing.)
⩥ Protein-phosphorylating enzymes' role in the regulation of gene
expression involves _____.
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
Answer: protein activation(Proteins are often activated by
phosphorylation.)
⩥ Which statement(s) about inducible operons is/are correct?
In an inducible operon, the repressor is synthesized in an active form.
In an inducible operon, an inducer inactivates the repressor.
Inducible enzymes generally function in synthetic pathways that produce
end products from raw materials..
,Answer: In an inducible operon, the repressor is synthesized in an active
form.
In an inducible operon, an inducer inactivates the repressor.
(An inducible operon is usually off but can be turned on when an
inducer interacts with and inactivates the repressor. The enzymes in an
inducible operon generally function in catabolic pathways. Read about
inducible operons.)
⩥ Which statement(s) about repressible operons is/are correct?
In a repressible operon, the repressor is synthesized in an active form.
Repressible operons usually contain genes that code for anabolic
enzymes.
A repressible operon is on unless a co-repressor is present..
Answer: Repressible operons usually contain genes that code for
anabolic enzymes.
A repressible operon is on unless a co-repressor is present.
, (A repressible operon is usually on but can be turned off when a co-
repressor interacts with and activates the repressor. The enzymes in an
inducible operon generally function in anabolic pathways. Read about
repressible operons.)
⩥ How are genes coordinately controlled in eukaryotic cells?
Coordinately controlled genes in eukaryotic cells share a set of control
elements.
Coordinately controlled genes in eukaryotic cells are activated by the
same chemical signals.
Coordinately controlled genes in eukaryotic cells are located together on
the same chromosome..
Answer: Coordinately controlled genes in eukaryotic cells share a set of
control elements.
Coordinately controlled genes in eukaryotic cells are activated by the
same chemical signals.
(In eukaryotes, specific transcription factors bind to control elements,
promoting transcription of coordinately controlled genes, even if the
genes are on separate chromosomes. Read about coordinately controlled
genes in eukaryotes.)
STUDY GUIDE FULL QUESTIONS AND
CORRECT ANSWERS
⩥ The nuclear membrane's role in the regulation of gene expression
involves _____.
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
Answer: regulating the transport of mRNA to the cytoplasm (This is the
role of the nuclear membrane in the regulation of gene expression.)
⩥ What is the function of a spliceosome?
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
,Answer: RNA processing (Spliceosomes are involved in RNA
processing.)
⩥ Protein-phosphorylating enzymes' role in the regulation of gene
expression involves _____.
protein activation
translation
protein degradation
regulating the transport of mRNA to the cytoplasm
RNA processing.
Answer: protein activation(Proteins are often activated by
phosphorylation.)
⩥ Which statement(s) about inducible operons is/are correct?
In an inducible operon, the repressor is synthesized in an active form.
In an inducible operon, an inducer inactivates the repressor.
Inducible enzymes generally function in synthetic pathways that produce
end products from raw materials..
,Answer: In an inducible operon, the repressor is synthesized in an active
form.
In an inducible operon, an inducer inactivates the repressor.
(An inducible operon is usually off but can be turned on when an
inducer interacts with and inactivates the repressor. The enzymes in an
inducible operon generally function in catabolic pathways. Read about
inducible operons.)
⩥ Which statement(s) about repressible operons is/are correct?
In a repressible operon, the repressor is synthesized in an active form.
Repressible operons usually contain genes that code for anabolic
enzymes.
A repressible operon is on unless a co-repressor is present..
Answer: Repressible operons usually contain genes that code for
anabolic enzymes.
A repressible operon is on unless a co-repressor is present.
, (A repressible operon is usually on but can be turned off when a co-
repressor interacts with and activates the repressor. The enzymes in an
inducible operon generally function in anabolic pathways. Read about
repressible operons.)
⩥ How are genes coordinately controlled in eukaryotic cells?
Coordinately controlled genes in eukaryotic cells share a set of control
elements.
Coordinately controlled genes in eukaryotic cells are activated by the
same chemical signals.
Coordinately controlled genes in eukaryotic cells are located together on
the same chromosome..
Answer: Coordinately controlled genes in eukaryotic cells share a set of
control elements.
Coordinately controlled genes in eukaryotic cells are activated by the
same chemical signals.
(In eukaryotes, specific transcription factors bind to control elements,
promoting transcription of coordinately controlled genes, even if the
genes are on separate chromosomes. Read about coordinately controlled
genes in eukaryotes.)
