2.)
a.) Are viruses that infect Archaea different from other bacterial viruses?
Yes, they have only DNA genomes.
b.) Of the following examples, which is not a common part of many viral life cycles?
Once an adenovirus virion is inside a cell, host RNA polymerases transcribe early genes
c.) Some viruses are associated with cancer. There are a variety of ways in which viruses may
affect a cell in a way that may lead to cancer. Based on your knowledge of the life cycles of
viruses and of molecular genetics, what is one way that this might happen?
d.) Which statement describes the difference between the normal neuron protein PrPC and the
pathogenic version PrPSc?Yes, they do not have protein coats because of the extreme conditions
where they live.No, they consist of nucleic acid and protein just like other bacterial viruses.Yes,
the structure of archaeal viruses is always completely different from other bacterial viruses.
Yes, they have only DNA genomes.
b.) Of the following examples, which is not a common part of many viral life cycles?The pox
virus genome is replicated by DNA polymerase.Adenoviruses attach to the cell and the
nucleocapsid is taken up by the cell.Pox viruses replicate in the cytoplasm of the cell.
Once an adenovirus virion is inside a cell, host RNA polymerases transcribe early genes
c.) Some viruses are associated with cancer. There are a variety of ways in which viruses may
affect a cell in a way that may lead to cancer. Based on your knowledge of the life cycles of
viruses and of molecular genetics, what is one way that this might happen?Viral genetic
material inserts into a host genome close to the termination sequence, far downstream of the
promoter, and causes a silent mutation.Viral genetic material inserts into a host genome in a
repetitive noncoding region.Viral genetic material inserts into a host genome, placing a
promoter in a new location and turning on a gene that had previously been turned off.Viral
genetic material inserts into a host genome and causes a mutation in a promoter, turning off a
gene that had previously been turned on.
d.) Which statement describes the difference between the normal neuron protein PrPC and the
pathogenic version PrPSc?PrPC is just a protein and the PrPSc is a protein with nucleic acid
inside.The PrPC protein contains more beta sheets while the PrPSc protein contains more alpha
helices.The three-dimensional conformation is identical, but the amino acid sequence is
different.The amino acid sequence is identical, but the three-dimensional conformation is
different.
Solution
Archaea can be infected by double stranded DNA virus that are unrelated to any other form of
virus and have variety unusual shapes. These are single stranded and double stranded DNA virus.
Species of the Ligameneviral and the families Ampullaviridae, Biccaudaviridae and
Clavaviridea, infects hyperthermophiic archaea species. These viruses have lipid bilayer coat
inside the icosahedral protein coat, and some of the viru.
2.)a.) Are viruses that infect Archaea different from other bacter.pdf
1. 2.)
a.) Are viruses that infect Archaea different from other bacterial viruses?
Yes, they have only DNA genomes.
b.) Of the following examples, which is not a common part of many viral life cycles?
Once an adenovirus virion is inside a cell, host RNA polymerases transcribe early genes
c.) Some viruses are associated with cancer. There are a variety of ways in which viruses may
affect a cell in a way that may lead to cancer. Based on your knowledge of the life cycles of
viruses and of molecular genetics, what is one way that this might happen?
d.) Which statement describes the difference between the normal neuron protein PrPC and the
pathogenic version PrPSc?Yes, they do not have protein coats because of the extreme conditions
where they live.No, they consist of nucleic acid and protein just like other bacterial viruses.Yes,
the structure of archaeal viruses is always completely different from other bacterial viruses.
Yes, they have only DNA genomes.
b.) Of the following examples, which is not a common part of many viral life cycles?The pox
virus genome is replicated by DNA polymerase.Adenoviruses attach to the cell and the
nucleocapsid is taken up by the cell.Pox viruses replicate in the cytoplasm of the cell.
Once an adenovirus virion is inside a cell, host RNA polymerases transcribe early genes
c.) Some viruses are associated with cancer. There are a variety of ways in which viruses may
affect a cell in a way that may lead to cancer. Based on your knowledge of the life cycles of
viruses and of molecular genetics, what is one way that this might happen?Viral genetic
material inserts into a host genome close to the termination sequence, far downstream of the
promoter, and causes a silent mutation.Viral genetic material inserts into a host genome in a
repetitive noncoding region.Viral genetic material inserts into a host genome, placing a
promoter in a new location and turning on a gene that had previously been turned off.Viral
genetic material inserts into a host genome and causes a mutation in a promoter, turning off a
gene that had previously been turned on.
d.) Which statement describes the difference between the normal neuron protein PrPC and the
pathogenic version PrPSc?PrPC is just a protein and the PrPSc is a protein with nucleic acid
inside.The PrPC protein contains more beta sheets while the PrPSc protein contains more alpha
helices.The three-dimensional conformation is identical, but the amino acid sequence is
different.The amino acid sequence is identical, but the three-dimensional conformation is
different.
Solution
2. Archaea can be infected by double stranded DNA virus that are unrelated to any other form of
virus and have variety unusual shapes. These are single stranded and double stranded DNA virus.
Species of the Ligameneviral and the families Ampullaviridae, Biccaudaviridae and
Clavaviridea, infects hyperthermophiic archaea species. These viruses have lipid bilayer coat
inside the icosahedral protein coat, and some of the virus has bottle shaped .
Genome of this virus has double stranded and single stranded DNA.
so that, the corect answer is No, they consist of nucleic acid and protein just like other bacterial
viruses
b) all options are correct , Thus, ansewr is non of the above options.
C) Viral genetic material inserts into a host genome, placing a promoter in a new location and
turning on a gene that had previously been turned off.
D) The correct answer is The amino acid sequence is identical, but the three-dimensional
conformation is different.
