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D
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| Q:Compared to DNA viral replication, RNA viral replication is more susceptible to mutation because?
A:RNA replication takes place in the cytoplasm, whereas DNA replication takes place in the nucleus.;B:RNA viruses replicate much faster than DNA viruses.;C:RNA viruses use uracil instead of thymine.;D:RNA replication la... |
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Some examples of viruses that belong to the polyomavirus family include JC (John Cunningham) and BK virus.
### Response:
| What are some viruses that belong to the polyomavirus family? |
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### Response:
Arboviruses are a class of viruses that have arthropod vectors.
### Response:
| What is a class of viruses that have arthropod vectors? |
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Retroviruses, such as HIV, are a type of virus that have a diploid single-stranded RNA genome. This means that their genetic material consists of a single strand of RNA that is composed of two copies of the viral genome. Unlike most other RNA viruses, whic... | What is the genetic makeup of retroviruses, such as HIV? |
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### Response:
Poxvirus is the only DNA virus that completely replicates in the cytoplasm, making it unique compared to other DNA viruses.
### Response:
| What is unique about the way poxvirus replicates compared to other DNA viruses? |
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### Response:
Poxviruses are the only DNA viruses that do not have icosahedral symmetry, and instead have a distinct "box" or "brick" shape.
### Response:
| What distinguishes poxviruses from other DNA viruses in terms of their shape? |
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Poxvirus has a distinct "dumbbell-shaped" core, which sets it apart from other viruses.
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| What is unique about the core shape of poxvirus? |
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Positive sense RNA viruses are translated directly into proteins by host cell ribosomes.
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| How are positive sense RNA viruses translated into proteins? |
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Parvovirus is a type of virus that has a unique genome structure compared to other DNA viruses. Specifically, it is the only DNA virus known to have a single-stranded genome, which means that its genetic material consists of a single strand of DNA rather t... | What is unique about the genome of Parvovirus, and how does this differ from other DNA viruses? |
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Parvovirus B19 is a type of virus that is unique in its genome structure compared to other DNA viruses. Specifically, it is the only known single-stranded DNA virus, which means that its genetic material consists of a single strand of DNA rather than the d... | What is Parvovirus B19, and how does it differ from other types of DNA viruses? |
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The outer glycoprotein of HIV is gp120. This protein is located on the surface of the viral envelope and is responsible for binding to the CD4 receptor on the surface of host cells. The binding of gp120 to CD4 triggers a conformational change that allows g... | What is the outer glycoprotein of HIV? |
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Zika virus is from the flaviviridae family, which includes many other viruses that are transmitted by arthropods and can cause a range of diseases in humans and other animals.
### Response:
| What is the family of viruses to which Zika virus belongs, and how does this relate to the characteristics and behavior of the virus? |
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Arenaviruses are known for their distinctive "grainy" appearance on electron microscopy.
### Response:
| Which group of viruses have a characteristic "grainy" or "sand-like" appearance on electron microscopy? |
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### Response:
Measles virus (rubeola virus) is known to produce Warthin-Finkeldey cells due to its surface fusion (F) proteins.
### Response:
| Which virus is known to produce Warthin-Finkeldey cells as a result of its surface fusion (F) proteins? |
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The surface F (fusion) proteins are responsible for the formation of multinucleated giant cells in paramyxoviruses.
### Response:
| What is the virulence factor responsible for the formation of multinucleated giant cells in paramyxoviruses? |
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### Response:
The viral virulence factors associated with Measles are Hemagglutinin and F (fusion) protein.
### Response:
| What are the viral virulence factors associated with Measles? |
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The name of the viral gene in HIV that codes for the surface glycoproteins gp120 and gp41 is env.
### Response:
| What is the name of the viral gene in HIV that codes for the surface glycoproteins gp120 and gp41? |
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The name of the viral gene in HIV that codes for the p24 capsid protein is gag.
### Response:
| What is the name of the viral gene in HIV that codes for the p24 capsid protein? |
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### Response:
The name of the viral gene in HIV that codes for the p17 matrix protein is gag.
### Response:
| What is the name of the viral gene in HIV that codes for the p17 matrix protein? |
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### Response:
The RNA virus family that is double-stranded is Reoviridae.
### Response:
| What is the name of the RNA virus family that has a double-stranded genome? |
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Arenaviruses have a single-stranded RNA genome that is ambisense. Arenaviruses are a family of viruses that can cause a variety of diseases in humans and animals, including Lassa fever and Argentine hemorrhagic fever. The genome of arenaviruses consists of... | Which group of viruses have a single-stranded RNA genome that is ambisense (both positive and negative)? |
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The group of viruses that have an ambisense genome is called Arenaviruses. Arenaviruses are a family of viruses that can cause severe illnesses in humans and animals, including Lassa fever and Argentine hemorrhagic fever. The genome of Arenaviruses consist... | What is the name of the group of viruses that have an ambisense genome? |
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The gene that undergoes mutation in resistance to HIV protease inhibitors is the pol gene. The pol gene is one of the genes that make up the genome of the human immunodeficiency virus (HIV). It encodes for the viral enzymes, including reverse transcriptase... | What is the name of the gene that undergoes mutation in resistance to HIV protease inhibitors? |
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### Response:
Togaviruses are positive-sense RNA viruses, meaning their genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of togaviruses? |
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### Response:
Reoviruses are double-stranded RNA viruses, meaning their genetic material is RNA that is double-stranded and can be transcribed into DNA for replication.
### Response:
| What is the genetic classification of Reoviruses? |
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### Response:
Polyomaviruses are double-stranded DNA viruses, meaning their genetic material is DNA that is double-stranded and can be transcribed into RNA for protein synthesis.
### Response:
| What is the genetic classification of polyomaviruses? |
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### Response:
Picornaviruses are positive-sense RNA viruses, meaning their genetic material is RNA that can be directly translated into proteins.
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| What is the genetic classification of picornaviruses? |
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### Response:
Paramyxoviruses are negative-sense RNA viruses, meaning their genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
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| What is the genetic classification of paramyxoviruses? |
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Orthomyxoviruses are negative-sense RNA viruses, meaning their genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
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| What is the genetic classification of orthomyxoviruses? |
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### Response:
Flaviviruses are positive-sense RNA viruses, meaning their genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Flaviviruses? |
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### Response:
Filoviruses are negative-sense RNA viruses, meaning their genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
### Response:
| What is the genetic classification of Filoviruses? |
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Caliciviruses are positive-sense RNA viruses, meaning their genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Caliciviruses? |
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### Response:
Bunyaviruses are negative-sense RNA viruses, meaning their genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
### Response:
| What is the genetic classification of Bunyaviruses? |
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### Response:
Rhinovirus is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Rhinovirus? |
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### Response:
Rhabdovirus is a negative-sense RNA virus, meaning its genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
### Response:
| What is the genetic classification of Rhabdovirus? |
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### Response:
Poliovirus is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Poliovirus? |
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### Response:
Parvovirus B19 is a single-stranded DNA virus, meaning its genetic material is DNA that is only composed of one strand.
### Response:
| What is the genetic classification of Parvovirus B19? |
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HTLV-1 is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of HTLV-1? |
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HHV-8 is a double-stranded DNA virus, meaning its genetic material is DNA that consists of two complementary strands.
### Response:
| What is the genetic classification of HHV-8? |
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### Response:
HHV-6 is a double-stranded DNA virus, meaning its genetic material is DNA that consists of two complementary strands.
### Response:
| What is the genetic classification of HHV-6? |
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### Response:
Hepatitis D virus is a negative-sense RNA virus, meaning its genetic material is RNA that is complementary to the mRNA strand and needs to be transcribed into a positive-sense RNA before protein synthesis can occur.
### Response:
| What is the genetic classification of Hepatitis D virus? |
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Hepatitis B virus is a partially double-stranded DNA virus, meaning its genetic material is DNA that is partially double-stranded and partially single-stranded.
### Response:
| What is the genetic classification of Hepatitis B virus? |
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### Response:
Hepatitis B virus is a DNA virus, meaning its genetic material is DNA that can be directly transcribed into mRNA for protein synthesis.
### Response:
| What is the genetic classification of Hepatitis B virus? |
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Hepatitis A virus is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Hepatitis A virus? |
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Hepatitis C virus is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of Hepatitis C virus? |
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Coxsackievirus is a positive-sense RNA virus, meaning its genetic material is RNA that can be directly translated into proteins.
### Response:
| What is the genetic classification of coxsackievirus? |
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The genome of HDV (Hepatitis Delta Virus) is circular. HDV is a defective RNA virus that requires the presence of the hepatitis B virus (HBV) to replicate and cause disease. The genome of HDV is a single-stranded, circular RNA molecule that is about 1.7 ki... | What is the configuration of the genome of HDV (Hepatitis Delta Virus)? |
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The genome of HBV (Hepatitis B Virus) is circular. HBV is a partially double-stranded DNA virus that is a major cause of liver disease worldwide, including chronic hepatitis, cirrhosis, and liver cancer. The genome of HBV is about 3.2 kilobases in length a... | What is the configuration of the genome of HBV (Hepatitis B Virus)? |
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Yellow fever belongs to the Flaviviridae family of viruses.
### Response:
| To which family of viruses does Yellow fever belong? |
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### Response:
West Nile virus belongs to the Flaviviridae family of viruses.
### Response:
| To which family of viruses does West Nile virus belong? |
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### Response:
HCV (Hepatitis C virus) belongs to the Flaviviridae family of viruses.
### Response:
| To which family of viruses does HCV belong? |
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### Response:
Dengue fever belongs to the Flaviviridae family of viruses.
### Response:
| To which family of viruses does Dengue fever belong? |
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The structure that surrounds the genetic material in a virus is called a capsid. A capsid is a protein shell that encloses the viral genome, which can be either DNA or RNA. The capsid provides protection for the viral genome and helps to facilitate the pro... | What is the structure that surrounds the genetic material in a virus? |
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Viruses can be classified into two types based on their outer structure: "naked" viruses and enveloped viruses. Naked viruses are viruses that do not have an outer lipid membrane, while enveloped viruses have an outer lipid membrane that is derived from th... | What are the two types of viruses based on their outer structure? |
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The polypeptide product produced by togaviruses is cleaved via viral proteases. Togaviruses are a group of RNA viruses that are responsible for a variety of diseases in humans and animals, including chikungunya fever and rubella. These viruses produce a si... | How is the polypeptide product produced by togaviruses cleaved? |
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The virus families that have segmented genomes and include bunyavirus, orthomyxovirus, arenavirus, and reovirus are called segmented virus families.
### Response:
| What are the names of the virus families that have segmented genomes and include bunyavirus, orthomyxovirus, arenavirus, and reovirus? |
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The grainy particles seen within Arenaviruses on microscopy are host cell ribosomes, which have been co-opted by the virus to aid in its replication.
### Response:
| What are the grainy particles seen within Arenaviruses on microscopy, and what do they represent? |
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The env gene of HIV encodes gp120 and gp41.
### Response:
| What are the products encoded by the env gene of HIV? |
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The two most common shapes of viral capsids are icosahedral and helical. Viral capsids are protein shells that enclose and protect the genetic material of viruses. The shape of the capsid can vary widely among different types of viruses and can play a role... | What are the two most common shapes of viral capsids? |
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The three negative RNA virus families that have helical capsids are filovirus, rhabdovirus, and arenavirus. These viruses are characterized by their helical nucleocapsid structure, which consists of a single-stranded RNA genome wrapped around a protein cor... | What are the names of the three negative RNA virus families that have helical capsids? |
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The segmented virus families include bunyavirus, orthomyxovirus, arenavirus, and reovirus. Segmented viruses are viruses that have their genetic material divided into multiple segments or pieces, rather than being contained in a single piece of genetic mat... | What are the names of the segmented virus families? |
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The segmented virus families include bunyavirus, orthomyxovirus, arenavirus, and reovirus. Segmented viruses are a type of virus whose genetic material is divided into multiple segments. This characteristic allows segmented viruses to undergo genetic reass... | What are the names of the segmented virus families? |
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RNA viruses can be distinguished from each other based on their polarity, which can be either (+) sense or (-) sense.
### Response:
| How can RNA viruses be distinguished from each other based on their genetic makeup? |
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Rhinovirus belongs to the Picornaviridae family of viruses.
### Response:
| What is the family of viruses that Rhinovirus belongs to? |
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Poxvirus has a linear, enveloped, double-stranded DNA (dsDNA) genome. Poxviruses are a family of large, complex viruses that can cause a range of diseases in humans and animals, including smallpox, monkeypox, and cowpox. The poxvirus genome is one of the l... | What is the genomic structure of poxvirus? |
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Positive sense RNA viruses carry RNA that is structurally similar to mRNA (messenger RNA). This means that the RNA of these viruses can be directly translated into protein by the host cell's ribosomes, without the need for an intermediate step of transcrip... | What is the structural similarity between the RNA carried by positive sense RNA viruses and mRNA? |
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Polyomaviruses are a family of small DNA viruses that are known for their circular genomes. Unlike other viruses that have linear DNA, polyomaviruses have a closed, circular DNA structure that allows them to efficiently replicate and persist within host ce... | What is the structure of the DNA genomes of polyomaviruses? |
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Picornaviruses have viral proteases which cleave the large translated polypeptide into functional viral proteins.
### Response:
| What is the role of viral proteases in the life cycle of picornaviruses? |
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Negative sense RNA viruses produce their own RNA polymerase to transcribe into positive sense RNA.
### Response:
| What do negative sense RNA viruses produce in order to transcribe into positive sense RNA? |
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Most RNA viruses are single-stranded.
### Response:
| What is the typical structure of RNA in most RNA viruses? |
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### Response:
Most RNA virus genomes are single-stranded and linear.
### Response:
| What is the typical structure of RNA virus genomes? |
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### Response:
No, Rhinovirus is not enveloped. It is classified as a naked virus, which means that it does not have a lipid envelope surrounding its nucleocapsid. Instead, the viral genome is enclosed by a protein shell called a capsid, which provides protection and hel... | Is Rhinovirus an enveloped virus? |
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Yes, Rhabdovirus is an enveloped virus. Its nucleocapsid, which contains the viral genome, is surrounded by a lipid envelope that is derived from the host cell membrane. The envelope of Rhabdovirus contains glycoprotein spikes that are important for viral ... | Does Rhabdovirus have an envelope? |
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No, Poliovirus is a naked virus and does not have an envelope. Enveloped viruses have a lipid membrane surrounding their protein capsid, while naked viruses have only a protein capsid. Poliovirus belongs to the family Picornaviridae and has a single-strand... | Does Poliovirus have an envelope? |
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No, Parvovirus B19 is a naked virus, which means that it does not have an envelope surrounding its nucleocapsid. The nucleocapsid of Parvovirus B19 is made up of a single-stranded DNA genome packaged inside a protein shell called a capsid. The capsid of Pa... | Does Parvovirus B19 have an envelope? |
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HIV env encoded gp120 and gp41 are first sent to the endoplasmic reticulum of the cell for processing. The endoplasmic reticulum is a complex network of membranes within the cell that is responsible for protein synthesis, folding, and transport. After the ... | What is the initial destination for HIV env encoded gp120 and gp41 after they are sent to the cell for processing? |
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HIV is a retrovirus, which is a type of RNA virus that uses reverse transcription to convert its single-stranded (+) RNA genome into double-stranded DNA. HIV is diploid, meaning that it has two copies of its genome, and its genome is single-stranded (+) RN... | What type of virus is HIV and what is its genetic makeup? |
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The genome of HIV contains two strands of RNA. HIV is a retrovirus, which means that it uses reverse transcription to convert its RNA genome into DNA, which is then integrated into the host cell's genome. This allows the virus to persist in the host for lo... | How many strands of RNA are present in the genome of HIV? |
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Hepatitis D virus is a type of virus that belongs to the deltaviridae family. This family of viruses is unique in that it requires the presence of another virus, hepatitis B virus (HBV), in order to replicate and cause disease. Specifically, the hepatitis ... | What is the family of viruses that hepatitis D belongs to? |
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The genome of the Hepatitis B virus (HBV) is partially double-stranded, meaning that one strand of the DNA is complete while the other is incomplete. The incomplete strand is called the "short" or "partially single-stranded" strand, and it is the template ... | What is the structure of the Hepatitis B virus genome? |
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What type of capsid do filoviruses have? Filoviruses have a helical capsid.
### Response:
| What type of capsid do filoviruses have? |
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The Epstein-Barr Virus has a linear genome. This means that the genetic material of the virus is arranged in a linear, or straight, sequence of nucleotides. The genome of the Epstein-Barr Virus is made up of double-stranded DNA, which contains all of the g... | What is the shape of the genome of the Epstein-Barr Virus? |
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Viruses are microscopic infectious agents that can cause a wide range of diseases in humans and other organisms. Enveloped viruses are a type of virus that have a lipid envelope surrounding their nucleocapsid, which is the protein shell that contains their... | What are the two shapes that enveloped viruses can have, and how do they differ from naked viruses? |
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No, the hepatitis E virus does not have an envelope. Hepatitis E is a single-stranded RNA virus that belongs to the family Hepeviridae. Unlike some other viruses, such as HIV, which have an envelope derived from the host cell membrane, the hepatitis E viru... | Does the hepatitis E virus have an envelope? |
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Yes, the hepatitis D virus has an envelope. Hepatitis D, also known as delta hepatitis, is a single-stranded RNA virus that is considered a satellite virus because it requires the presence of the hepatitis B virus to replicate. The hepatitis D virus has an... | Does the hepatitis D virus have an envelope? |
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No, the hepatitis A virus is a naked virus, which means it does not have an envelope. Hepatitis A is a small, single-stranded RNA virus that belongs to the family Picornaviridae. The virus is composed of a protein shell, or capsid, that protects the viral ... | Does the hepatitis A virus have an envelope? |
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No, picornaviruses are not enveloped viruses. They are classified as naked viruses, which means that they do not have a lipid envelope surrounding their protein capsid. Instead, the capsid directly encloses the viral genome, which is composed of RNA. Picor... | Are picornaviruses enveloped viruses? |
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Yes, Flaviviruses possess an envelope. Flaviviruses are a family of RNA viruses that include several important human pathogens, such as dengue virus, Zika virus, and yellow fever virus. Like other enveloped viruses, Flaviviruses have a lipid membrane envel... | Do Flaviviruses possess an envelope? |
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DNA viral genomes can either be circular or linear and are usually double-stranded. The double-stranded nature of DNA viral genomes allows for efficient replication and transcription of viral genes. Some viruses, such as the human papillomavirus, have circ... | What is the typical structure of DNA viral genomes? |
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The shape of the genome of cytomegalovirus (CMV) is linear.
### Response:
| What is the shape of the genome of cytomegalovirus (CMV)? |
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The polypeptide product produced by caliciviruses is cleaved via viral proteases. These enzymes are produced by the virus and are responsible for breaking down the larger polypeptide into smaller functional proteins. In the case of caliciviruses, this clea... | How is the polypeptide product produced by caliciviruses cleaved? |
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Bunyaviruses have 3 circular segments. These segments are made up of RNA and contain the genetic information necessary for the virus to replicate and cause disease. The circular shape of the segments is unique among RNA viruses and is thought to play a rol... | How many segments do bunyaviruses have and what is their shape? |
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### Response:
Arenaviruses have 2 circular segments.
### Response:
| How many circular segments do Arenaviruses have? |
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### Response:
Arenaviruses are classified as negative sense RNA viruses.
### Response:
| What is the classification of Arenaviruses? |
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### Response:
Arenavirus has a helical capsid.
### Response:
| What type of capsid does Arenavirus have? |
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### Response:
Flaviviruses have non-segmented genomes.
### Response:
| Do flaviviruses have segmented or non-segmented genomes? |
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### Response:
Yes, Arenaviruses are enveloped viruses.
### Response:
| Do Arenaviruses have an envelope surrounding their capsid? |
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### Response:
Marburg virus is the causative agent of Marburg haemorrhagic fever (MHF). Marburg and Ebola viruses are the two members of the Filoviridae family (filovirus). Though caused by different viruses, the two diseases are clinically similar. The viral structure ... | What is the pathophysiology behind Marburg hemorrhagic fever? |
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The dengue type 1 virus appears to have evolved in the early 19th century. Based on the analysis of the envelope protein there are at least four genotypes (1 to 4). The rate of nucleotide substitution for this virus has been estimated to be 6.5 Template:E... | What is the cause of fever in dengue? |
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Viruses; ssRNA viruses; ssRNA negative-strand viruses; Arenaviridae; Mammarenavirus
Lassa virus belongs to Arenaviridae. The Arenaviridae are a family of viruses whose members are generally associated with rodent-transmitted diseases in humans (zoonotic)... | What exactly is the Lassa virus? |
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