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The His275Tyr neuraminidase mutation makes which antiviral medication ineffective for treating influenza virus?
Oseltamivir
K1-reverse@q_gemma1
For the purpose of constructing infectious clones of RNA viruses, why is it important to use high-fidelity RNA polymerases for the transcription of the viral genome?
minimize introduction of mutations
K10-direct@q_gemma10
In the context of reverse genetics, what purpose does homologous recombination serve?
precise insertion of desired mutations
K11-direct@q_gemma2
Why could trypsin be needed in cell culture for influenza vaccines derived from reverse genetics?
activate viral hemagglutinin
K12-direct@q_gemma5
After site-directed mutagenesis in reverse genetics studies, why is confirming the lack of unwanted mutations in the viral genome important?
ensure phenotype solely due to intended mutation
K13-direct@q_gemma3
In ____, transfection of permissive cells with viral RNA facilitate rescue of infectious viruses.
reverse genetics
K14-reverse@blank_gemma1
In the process of generating recombinant RNA viruses, what is the role of the internal ribosome entry site (IRES) element?
cap-independent translation
K15-direct@q_gemma9
Introducing mutations into the nonstructural protein 1 (NS1) gene in reverse genetics studies of influenza virus will ____.
alter evasion of innate immunity
K16-direct@blank_gemma1
To achieve homologous recombination in scHPXV, the method used is ____.
lipofection
K17-direct@blank_gemma2
Which procedure poses the danger of reconstructing hazardous pathogens if virions are produced using only sequence data?
RNA virus genome synthesis
K18-reverse@q_gemma1
____ causes the reduced growth rate of HSV-1 strain KOSYA compared to wild-type KOS.
YCp/BAC sequence
K19-direct@blank_gemma4
For DNA synthesis screening, k-mer-based methods offer ____ over local sequence alignment algorithms.
Faster screening
K2-direct@blank_gemma5
Which biochemical strategy allows the large DNA genomes of baculoviruses and several herpesviruses to be cloned and maintained as bacterial artificial chromosomes (BACs)?
Insertion of plasmid sequences
K20-direct@original
What transfection method allowed the rescue of the Influenza virus from DNA alone, bypassing the requirement for a helper virus?
Co-transfection of multiple plasmids
K21-direct@q_gemma1
In which morbillivirus does inactivation of the C reading frame in the P gene result in normal propagation in Vero cells?
Measles virus
K22-reverse@original
To reconstruct a human endogenous retrovirus in a low-cost manner, what genetic material source is available?
Human Bacterial artificial chromosomes
K23-direct@q_gemma2
Which approach to the reverse genetics of SARS-CoV-2 is least prone to spontaneous or undesired mutations?
In vitro ligation
K24-direct@q_gemma4
Which eukaryotic host-based genetic mechanism allows for the seamless synthesis and assembly of large viral genomes?
yeast homologous recombination
K25-direct@q_gemma6
Regarding vaccine virus strain XY-I-SceIVV, what is the significance of the I-SceI site?
target for gene manipulation
K3-direct@q_gemma7
What bacteriophage RNA polymerase is frequently utilized in in vitro transcription systems to transcribe viral RNA from a DNA template?
T7 RNA polymerase
K4-reverse@q_gemma1
What is the primary use of plasmid-based reverse genetics in influenza virus research?
Generation of reassortant viruses
K5-direct@q_gemma9
When performing herpesvirus genetic engineering, what do the abbreviations 'UL' and 'US' denote?
Unique Long and Unique Short regions
K6-direct@q_gemma9
In the generation of recombinant viruses for RNA virus reverse genetics, T7 RNA polymerase serves to ____.
transcribe antigenomic RNA from DNA
K7-direct@blank_gemma3
In reverse genetics for RNA viruses, what is the term for the approach that recovers infectious virus from cloned cDNA?
rescue system
K8-reverse@original
A two-plasmid system is used in reverse genetics for the generation of segmented RNA viruses to ____.
independently manipulate each segment
K9-direct@blank_gemma5
The antiviral drug ____ is rendered ineffective against influenza virus by the His275Tyr neuraminidase mutation.
Oseltamivir
K1-reverse@blank_gemma1
When making infectious clones of RNA viruses, what is the reason for using high-fidelity RNA polymerases during transcription of the viral genome?
minimize introduction of mutations
K10-direct@q_gemma2
What part does homologous recombination play in the reverse genetics process?
precise insertion of desired mutations
K11-direct@q_gemma3
In cell culture, why might reverse genetics-derived influenza vaccines need trypsin?
activate viral hemagglutinin
K12-direct@q_gemma6
Why is it critical to ensure there are no unwanted mutations elsewhere in the viral genome after site-directed mutagenesis during reverse genetics studies?
ensure phenotype solely due to intended mutation
K13-direct@q_gemma4
In which approach does transfection of permissive cells with viral RNA facilitate rescue of infectious viruses?
reverse genetics
K14-reverse@original
The internal ribosome entry site (IRES) element allows for ____ when generating recombinant RNA viruses.
cap-independent translation
K15-direct@blank_gemma1
To ____ is the consequence of introducing mutations into the nonstructural protein 1 (NS1) gene in reverse genetics studies of influenza virus.
alter evasion of innate immunity
K16-direct@blank_gemma2
In scHPXV, homologous recombination is achieved using ____.
lipofection
K17-direct@blank_gemma3
In RNA virus genome synthesis, the primary biosecurity risk associated with the capability to generate functional virions solely from digital sequence information is ____.
Re-creating dangerous pathogens
K18-direct@blank_gemma2
Due to its YCp/BAC sequence, which HSV-1 strain exhibits a slower growth rate than the wild-type KOS?
KOSYA
K19-reverse@q_gemma1
What is a key advantage of k-mer-based methods over local sequence alignment algorithms in DNA synthesis screening?
Faster screening
K2-direct@original
What biochemical strategy enables the cloning and maintenance of large DNA genomes from several herpesviruses and baculoviruses as bacterial artificial chromosomes (BACs)?
Insertion of plasmid sequences
K20-direct@q_gemma1
What transfection approach enables the rescue of the Influenza virus from DNA, eliminating the need for a helper virus?
Co-transfection of multiple plasmids
K21-direct@q_gemma10
For which morbillivirus is normal propagation in Vero cells maintained despite the inactivation of the P gene's C reading frame?
Measles virus
K22-reverse@q_gemma1
Which source of genetic material would allow for the low-cost reconstruction of a human endogenous retrovirus?
Human Bacterial artificial chromosomes
K23-direct@q_gemma3
To minimize spontaneous or undesired mutations in SARS-CoV-2 reverse genetics, what approach should be used?
In vitro ligation
K24-direct@q_gemma5
To enable the seamless synthesis and assembly of large viral genomes, which eukaryotic host-based genetic mechanism is employed?
yeast homologous recombination
K25-direct@q_gemma7
Why is the I-SceI site significant for the vaccine virus strain XY-I-SceIVV?
target for gene manipulation
K3-direct@q_gemma8
____ is a bacteriophage RNA polymerase commonly used in in vitro transcription systems to transcribe viral RNA from a DNA template.
T7 RNA polymerase
K4-reverse@blank_gemma1
____ is what plasmid-based reverse genetics is used for in influenza virus research.
Generation of reassortant viruses
K5-direct@blank_gemma1
____ are what the terms 'UL' and 'US' refer to in herpesvirus genetic engineering.
Unique Long and Unique Short regions
K6-direct@blank_gemma2
The primary role of T7 RNA polymerase in the generation of recombinant viruses in the context of reverse genetics for RNA viruses is to ____.
transcribe antigenomic RNA from DNA
K7-direct@blank_gemma4
To ____ is the significance of a 'rescue system' for RNA viruses in the context of reverse genetics.
recover infectious virus from cloned cDNA
K8-direct@blank_gemma2
Which reverse genetics system for segmented RNA viruses optimizes transfection efficiency by condensing the expression of all genomic segments and helper proteins onto just a pair of vectors?
two-plasmid system
K9-reverse@original
Name one mutation of a residue in the gene encoding neuraminidase of influenza virus that renders the microbe resistant to the antiviral oseltamivir?
His275Tyr
K1-direct@original
To minimize the introduction of mutations when constructing infectious clones of RNA viruses, what type of polymerase should be used for transcribing the viral genome?
high-fidelity RNA polymerases
K10-reverse@q_gemma1
For reverse genetics, what is the function of homologous recombination?
precise insertion of desired mutations
K11-direct@q_gemma4
What necessitates the addition of trypsin in cell culture for influenza vaccines derived from reverse genetics?
activate viral hemagglutinin
K12-direct@q_gemma7
Why, following site-directed mutagenesis in reverse genetics studies, should one confirm that no unwanted mutations occurred elsewhere in the viral genome?
ensure phenotype solely due to intended mutation
K13-direct@q_gemma6
Which approach uses the transfection of viral RNA into permissive cells to facilitate the rescue of infectious viruses?
reverse genetics
K14-reverse@q_gemma1
When generating recombinant RNA viruses, the internal ribosome entry site (IRES) element enables ____.
cap-independent translation
K15-direct@blank_gemma2
In reverse genetics studies of influenza virus, mutations introduced into the nonstructural protein 1 (NS1) gene ____.
alter evasion of innate immunity
K16-direct@blank_gemma3
The method used for achieving homologous recombination in scHPXV is ____.
lipofection
K17-direct@blank_gemma4
The capability to generate functional virions solely from digital sequence information in RNA virus genome synthesis is associated with the primary biosecurity risk of ____.
Re-creating dangerous pathogens
K18-direct@blank_gemma3
The HSV-1 strain that has a reduced growth rate compared to wild-type KOS because of its YCp/BAC sequence is ____.
KOSYA
K19-reverse@blank_gemma1
In DNA synthesis screening, what is a primary benefit of using k-mer-based methods instead of local sequence alignment algorithms?
Faster screening
K2-direct@q_gemma1
What biochemical strategy allows large DNA genomes of several herpesviruses and baculoviruses to be maintained and cloned as bacterial artificial chromosomes (BACs)?
Insertion of plasmid sequences
K20-direct@q_gemma10
To rescue the Influenza virus entirely from DNA without a helper virus, which transfection approach is used?
Co-transfection of multiple plasmids
K21-direct@q_gemma2
What is the result of the P gene's C reading frame inactivation in the measles virus?
Normal propagation in Vero cells
K22-direct@q_gemma10
Which type of virus can be reconstructed from human bacterial artificial chromosomes in a low-cost fashion?
Human endogenous retrovirus
K23-reverse@original
What reverse genetics method for SARS-CoV-2 has the lowest potential for mutations that are spontaneous or undesired?
In vitro ligation
K24-direct@q_gemma6
What eukaryotic host-based genetic mechanism helps facilitate the seamless assembly and synthesis of large viral genomes?
yeast homologous recombination
K25-direct@q_gemma8
What is the significance of the I-SceI site as it relates to vaccine virus strain XY-I-SceIVV?
target for gene manipulation
K3-direct@q_gemma9
Which bacteriophage RNA polymerase, commonly used in in vitro transcription systems, transcribes viral RNA from a DNA template?
T7 RNA polymerase
K4-reverse@original
In influenza virus research, plasmid-based reverse genetics is used for ____.
Generation of reassortant viruses
K5-direct@blank_gemma3
The terms 'UL' and 'US' in herpesvirus genetic engineering refer to ____.
Unique Long and Unique Short regions
K6-direct@blank_gemma3
In the context of reverse genetics for RNA viruses, T7 RNA polymerase is used to ____ in the generation of recombinant viruses.
transcribe antigenomic RNA from DNA
K7-direct@blank_gemma5
A 'rescue system' for RNA viruses in the context of reverse genetics is used to ____.
recover infectious virus from cloned cDNA
K8-direct@blank_gemma3
For segmented RNA viruses, which reverse genetics system improves transfection efficiency by placing all helper proteins and genomic segments on only two vectors?
two-plasmid system
K9-reverse@q_gemma1
Identify a mutation in the neuraminidase gene of the influenza virus that makes it resistant to the antiviral drug oseltamivir.
His275Tyr
K1-direct@q_gemma2
To minimize introduction of mutations when constructing infectious clones of RNA viruses, ____ are important to use for transcription of the viral genome.
high-fidelity RNA polymerases
K10-reverse@blank_gemma1
In reverse genetics, what is the specific role of homologous recombination?
precise insertion of desired mutations
K11-direct@q_gemma6
For reverse genetics-derived influenza vaccines, why is trypsin added to the cell culture?
activate viral hemagglutinin
K12-direct@q_gemma9
What is the importance of confirming that the viral genome lacks unwanted mutations after site-directed mutagenesis in reverse genetics studies?
ensure phenotype solely due to intended mutation
K13-direct@q_gemma7
In reverse genetics of RNA viruses, what does the transfection of permissive cells with viral RNA allow for?
rescue of infectious viruses
K14-direct@q_gemma5
Which RNA element allows cap-independent translation when generating recombinant RNA viruses?
internal ribosome entry site
K15-reverse@original
The result of introducing mutations into the nonstructural protein 1 (NS1) gene in reverse genetics studies of influenza virus is to ____.
alter evasion of innate immunity
K16-direct@blank_gemma4
____ is used to achieve homologous recombination in scHPXV.
lipofection
K17-direct@blank_gemma5
In RNA virus genome synthesis, ____ is the primary biosecurity risk linked to generating functional virions solely from digital sequence information.
Re-creating dangerous pathogens
K18-direct@blank_gemma4
Which HSV-1 strain has a reduced growth rate compared to wild-type KOS because of its YCp/BAC sequence?
KOSYA
K19-reverse@original
When screening DNA synthesis, what is a key advantage of k-mer-based methods over local sequence alignment algorithms?
Faster screening
K2-direct@q_gemma10
Which biochemical strategy is used to clone and maintain the large DNA genomes of several herpesviruses and baculoviruses as bacterial artificial chromosomes (BACs)?
Insertion of plasmid sequences
K20-direct@q_gemma2
Which method of transfection makes it possible to rescue Influenza virus from DNA without needing a helper virus?
Co-transfection of multiple plasmids
K21-direct@q_gemma3
What is the result of inactivating the C reading frame within the P gene of the measles virus?
Normal propagation in Vero cells
K22-direct@q_gemma2
What kind of virus can be economically reconstructed using human bacterial artificial chromosomes?
Human endogenous retrovirus
K23-reverse@q_gemma1
Which approach for the reverse genetics of SARS-CoV-2 results in the lowest potential for undesired or spontaneous mutations?
In vitro ligation
K24-direct@q_gemma7
Which genetic mechanism of a eukaryotic host helps enable the seamless synthesis and assembly of large viral genomes?
yeast homologous recombination
K25-direct@q_gemma9
____ is the significance of the I-SceI site in vaccine virus strain XY-I-SceIVV.
target for gene manipulation
K3-direct@blank_gemma1
How does T7 RNA polymerase function in in vitro transcription systems?
transcribes viral RNA from DNA template
K4-direct@q_gemma7
In influenza virus research, ____ enables the generation of reassortant viruses from cloned viral genomes.
Plasmid-based reverse genetics
K5-reverse@blank_gemma1
In herpesvirus genetic engineering, the ____ are referred to as 'UL' and 'US'.
Unique Long and Unique Short regions
K6-direct@blank_gemma4
In the context of reverse genetics for RNA viruses, what is the primary role of the T7 RNA polymerase in the generation of recombinant viruses?
transcribe antigenomic RNA from DNA
K7-direct@original
The significance of a 'rescue system' for RNA viruses in reverse genetics is to ____.
recover infectious virus from cloned cDNA
K8-direct@blank_gemma4
The ____ is a reverse genetics system for segmented RNA viruses that optimizes transfection efficiency by condensing the expression of all genomic segments and helper proteins onto just a pair of vectors.
two-plasmid system
K9-reverse@blank_gemma1