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Study sets matching "term:dna virus = dna enters host cell nucleus, transcribed to mrna, mrna made into viral proteins"

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Study sets matching "term:dna virus = dna enters host cell nucleus, transcribed to mrna, mrna made into viral proteins"

30 terms
Host Defense 4-28-15 Overview of viruses
virus
+ strand RNA genome
- strand RNA genome
ambisense genome
small infectious obligate intracellular parasite capable of r…
genome same polarity as mRNA
genome with opposite polarity as mRNA
genome with both + and - strand RNA
virus
small infectious obligate intracellular parasite capable of r…
+ strand RNA genome
genome same polarity as mRNA
24 terms
Viruses viroids and prions
After the attachment entry of a virus…
Prophage
In polio virus replication the functio…
Provirus
Uncoating
Viral DNA incorporated into a lysogenic cell
Serve as a template for the production of sense strand RNA
Animal viral DNA that is integrated into the host chromosome
After the attachment entry of a virus…
Uncoating
Prophage
Viral DNA incorporated into a lysogenic cell
26 terms
Chapter 13-Synthesis of Virus MATCHING
DNA
RNA
+ssRNA
reverse tanscriptase
Viruses often enter the nucleus
Viruses often replicate in the cytoplasm
genome of animal virus can act directly as mRNA
Retroviruses require the activity of ____________________ to…
DNA
Viruses often enter the nucleus
RNA
Viruses often replicate in the cytoplasm
7 terms
DNA virus
Replication of DNA 1
Replication of DNA 2
Replication of DNA 3
Replication of DNA 4
Attachment - virion attaches to host cell.
Entry and Uncoating - virion enters cell and its DNA is uncoa…
A portion of viral DNA is transcribed producing mRNA that enc…
Biosynthesis - viral DNA is replicated and some viral protein…
Replication of DNA 1
Attachment - virion attaches to host cell.
Replication of DNA 2
Entry and Uncoating - virion enters cell and its DNA is uncoa…
8 terms
Retrovirus
1
2
3
4
Virus enters host cell
Viral DNA transcribed from viral RNA by reverse transcriptase
Viral DNA replicated to form a complete double strand
Viral DNA incorporated into host cell DNA
1
Virus enters host cell
2
Viral DNA transcribed from viral RNA by reverse transcriptase
17 terms
Viruses
Virus
Cytoplasm, Organelles
Provirus
mRNA 1
Nonliving particle made up of nucleic acid and a protein coat…
Viruses do not have _____ & _____.
Inserted viral DNA in a host cell's chromosome; transcribed i…
When DNA of some DNA viruses enters host cell, it makes _____…
Virus
Nonliving particle made up of nucleic acid and a protein coat…
Cytoplasm, Organelles
Viruses do not have _____ & _____.
8 terms
HIV CYCLE
Step one
Step 2
step 3
step 4
Viral Genome and reverse transcriptase enter cell
Reverse transcriptase synthesizes copy of DNA from RNA
RNA is degrated, another DNA strand is made
Integrase works to incorporate DNA into host Genome.
Step one
Viral Genome and reverse transcriptase enter cell
Step 2
Reverse transcriptase synthesizes copy of DNA from RNA
134 terms
Ch 8
Virus
Virion
Capsid
Viral genomes of the plus configuration
a genetic element containing either RNA or DNA surrounded by…
the infectious virus particle; the viral genome surrounded by…
the protein shell that contains the virus genome
have the exact same base sequence as that of the viral mRNA t…
Virus
a genetic element containing either RNA or DNA surrounded by…
Virion
the infectious virus particle; the viral genome surrounded by…
67 terms
8 Replication of DNA & RNA Viruses
What is a virus?
What is a virus made of?
What is a viral genome made of?
How does virus replicate?
Obligate intracellular parasite
Viral Genomes (either RNA or DNA) and functional proteins
either RNA or DNA
Hijacks on host cell machinery to replicate successfully
What is a virus?
Obligate intracellular parasite
What is a virus made of?
Viral Genomes (either RNA or DNA) and functional proteins
42 terms
microbiology topic 4
dna or rna, infections and most diseases
generalist
most viruses
capsomere
virus
infects many kinds of cells in many hosts
infect only particular hosts cells because of affinity of vir…
made of single or multiple proteins
dna or rna, infections and most diseases
virus
generalist
infects many kinds of cells in many hosts
19 terms
3) Structure and Activity of Viruses
Viruses
Viral replication steps
Capsomere
Capsid structure patterns
NO binary fission
latent... rise (burst)... yield
protein surrounding nucleic acid
loosely packed DNA... or completely condensed DNA
Viruses
NO binary fission
Viral replication steps
latent... rise (burst)... yield
26 terms
Chapter 13-Synthesis of Virus MATCHING#3
DNA
RNA
+ssRNA
reverse tanscriptase
Viruses often enter the nucleus
Viruses often replicate in the cytoplasm
virus can act directly as mRNA
Retroviruses require the activity of ____________________ to…
DNA
Viruses often enter the nucleus
RNA
Viruses often replicate in the cytoplasm
30 terms
Chapter 6 micro
Virus
Structure lf virus
Virus classified
Viroids
Infection agent too small to be seen with light microcope
Nucleic acid and protein coat
According to type of host or structure and method of replicat…
Infections RNA smaller that viruses disrupt cell metabolism
Virus
Infection agent too small to be seen with light microcope
Structure lf virus
Nucleic acid and protein coat
15 terms
Bio Ch. 13: Viruses
capsid, capsomere, envelope, genome, s…
capsid
envelope
genome
components of a virus
complex protein shell; made of repeated units of capsomeres
stolen from a cell membrane
DNA (can be replicated and transcribed by host cell machinery…
capsid, capsomere, envelope, genome, s…
components of a virus
capsid
complex protein shell; made of repeated units of capsomeres
34 terms
Biology Chapter 17
Host Range
Lytic Cycle
Virulent phage
Lysogenic cycle
The limited number of species that a virus can affect
a phage replacative cycle that results in the death of the host
a phage that only replicates via the lytic cycle (death of ho…
a phage replacative cycle that allowed for the replication of…
Host Range
The limited number of species that a virus can affect
Lytic Cycle
a phage replacative cycle that results in the death of the host
14 terms
Micro Exam 2 Ch 13
virus
capsid
virion
genome
small(cant be seen by light micros.)... acellular... infect all lif…
exterior shell of a virus; protein coat... symmetrical
extracellular state of a virsus
nucleic acid of a virus... contains DNA/RNA
virus
small(cant be seen by light micros.)... acellular... infect all lif…
capsid
exterior shell of a virus; protein coat... symmetrical
9 terms
Replication of Herpesvirus
Herpesvirus is a -
Herpesvirus attaches by - ... enters by -…
Early transcription -
Early translation -
enveloped dsDNA virus with icosahedral capsid
-peplomers recognizing cell receptors... -fusion... -in vicinity of…
DNA -> transcribed by host enzymes -> into early mRNA
mRNA moves to cytoplasm -> translated into DNA dependent DNA…
Herpesvirus is a -
enveloped dsDNA virus with icosahedral capsid
Herpesvirus attaches by - ... enters by -…
-peplomers recognizing cell receptors... -fusion... -in vicinity of…
54 terms
Micro 12,13 Viral Replication
Virus life cycle stages (5)
What does a virus need to do to propag…
1. describe virus multiplication: adso…
virus multiplication: hemagglutinin
1) attachment (adsorption)... 2) penetration (injection)... 3) prot…
- Infect an appropriate host cell - Use the host cell to gene…
-aka attachment... -specific & nonspecific mechanisms... -*viral…
aids in endocytosis of virus?
Virus life cycle stages (5)
1) attachment (adsorption)... 2) penetration (injection)... 3) prot…
What does a virus need to do to propag…
- Infect an appropriate host cell - Use the host cell to gene…
Microbiology: Introduction to Viruses
Characteristics of a virus
General size of viruses
viral covering structure contains
viral central core consists of
-infect every type of cell... -cannot exist independently... -oblig…
capsid, made up of proteins, is the coat... envelope (not found…
nucelic acid molecules, DNA or RNA.... matrix proteins... enzymes (…
Characteristics of a virus
-infect every type of cell... -cannot exist independently... -oblig…
General size of viruses
22 terms
Basic Virology
Productive Infection
Abortive Infection
Chronic Persistent Infection
Latent Infection
Infection with high production. Host cell is killed in hours…
Replication terminated after attachment or adsorption and hos…
Low viral production and host cell survives for a long time
Quiescent, so genome is conserved wifh little replication, bu…
Productive Infection
Infection with high production. Host cell is killed in hours…
Abortive Infection
Replication terminated after attachment or adsorption and hos…
68 terms
Viral Replication and Pathogenesis
A cell that has a functional receptor…
A cell that has no receptor--it may or…
A cell has the capacity to replicate v…
A cell that can take up a virus partic…
Susceptible
resistant
Permissive
Susceptible and permissive
A cell that has a functional receptor…
Susceptible
A cell that has no receptor--it may or…
resistant
33 terms
Viruses
General Characteristics
Metabolically inert:
Every virus has a host range
Host range is determined by:
Not prokaryotic, not eukaryotic, NOT CELLS... Do evolve... Obligate…
Cannot grow outside of host cell... Cannot create energy outside…
List of all host cells a virus can infect... Most viruses infect…
Host attachment site (makers on external surface of host cell…
General Characteristics
Not prokaryotic, not eukaryotic, NOT CELLS... Do evolve... Obligate…
Metabolically inert:
Cannot grow outside of host cell... Cannot create energy outside…
42 terms
AP Bio Chapter 19: Viruses
Helical/Rod shaped Viruses
Martinus Beijernick
Stanley
Four Forms of Viral Genomes
Have a rigid, rod-shaped capsid made from over a thousand mol…
He investigated the properties of the agent that causes tobac…
Crystallized tobacco mosaic virus, the act of crystallization…
1) Double stranded DNA... 2) Single stranded DNA... 3) Double stran…
Helical/Rod shaped Viruses
Have a rigid, rod-shaped capsid made from over a thousand mol…
Martinus Beijernick
He investigated the properties of the agent that causes tobac…
35 terms
Micro exam 3 lecture 3-30-16
Tail
Capsid protein
Protein in evelope
Penetration
Protein on phage that attaches to host cell receptor.
Protein on nonenveloped virus attaches to host cell receptor.
Protein on enveloped virus that attaches to host cell receptor
+ or - uncoding, Get NA to its site for replication.
Tail
Protein on phage that attaches to host cell receptor.
Capsid protein
Protein on nonenveloped virus attaches to host cell receptor.
38 terms
Cells Structure and function of viruses Lecture 5
Bacteriophage
Virus
Viral envelope
Capsid
Viruses that replicate in bacteria
An infectious package of genes wrapped in a protein coat. Can…
A membrane that sometimes encloses a virus. It is derived fro…
The protein coat around the virus. Made of an alpha helical a…
Bacteriophage
Viruses that replicate in bacteria
Virus
An infectious package of genes wrapped in a protein coat. Can…
29 terms
Virus Lecture 19
Capsid Morphology of Animal Viruses
Examples of Polyhedral capsid viruses
Examples of Helical capsid viruses
Naked virus
icosahedral or helical
Poliovirus/adenovirus... Herpes virus
rabies virus... Ebola virus
virus does not contain envelope ... no longer infectious
Capsid Morphology of Animal Viruses
icosahedral or helical
Examples of Polyhedral capsid viruses
Poliovirus/adenovirus... Herpes virus
59 terms
Chapter 13 LO
pathogenic bacteria
pathogenic virus
virion
virion consists of:
living
1. not living... 2. need host cell to replicate
one single viral unit
RNA or DNA and has a protein coat
pathogenic bacteria
living
pathogenic virus
1. not living... 2. need host cell to replicate
19 terms
viral replication: temperate bacteriophage
replication of animal viruses
difference result from
attachment of animal viruses
three direct mechanisms of entry of an…
same basic replication pathway as bacteriophages
-presence of envelope around some viruses... - euk. nature of an…
- chem. attraction bw viral protein and cell receptor ... - anim…
- direct penetration (naked)... - membrane fusion (enveloped) ... -…
replication of animal viruses
same basic replication pathway as bacteriophages
difference result from
-presence of envelope around some viruses... - euk. nature of an…
36 terms
Viruses
0.03-0.2 micrometers
capsid
envelope
virus attachment particles
size
protein coat enclosing genetic material
lipid coat made of host cell lipids
make specific, target particular host proteins
0.03-0.2 micrometers
size
capsid
protein coat enclosing genetic material
12 terms
Into to Virus
2 Components of Virus
5 Phases of Viral Life Cycle
Attachement
Viral entry / uncoating
1. DNA or RNA (genetic info)... 2. Capsid (protein encasement)
1. Attachment ... 2. Viral entry / uncoating ... 3. Biosynethesis…
- Attachment protein on virus (docking protein) ... - Receptor s…
- Virus enters the cell ... - Once inside the cell by fusion wit…
2 Components of Virus
1. DNA or RNA (genetic info)... 2. Capsid (protein encasement)
5 Phases of Viral Life Cycle
1. Attachment ... 2. Viral entry / uncoating ... 3. Biosynethesis…
41 terms
Chapter 5
Tobacco Mosaic Virus
Filterable Virus
Obligate Intracelluar Parasites
Virus Alive Debate
First virus to be discovered in 1892... Took so long because the…
Early researchers found that when fluids from host organisms…
Cannot multiply unless they invade a specific host cell and i…
Technically not living: protein cell with a genetic info insi…
Tobacco Mosaic Virus
First virus to be discovered in 1892... Took so long because the…
Filterable Virus
Early researchers found that when fluids from host organisms…
55 terms
Pharmacology: Antivirals
incapable
virion
capsid
lipoprotein
Viruses are ______ of reproduction outside host cells. They a…
The _______ is a free living (outside its host) virus particl…
The virion is enclosed in a ______ which is a protein coat co…
An external _________ envelope is acquired from the virions h…
incapable
Viruses are ______ of reproduction outside host cells. They a…
virion
The _______ is a free living (outside its host) virus particl…
13 terms
Antivirals
-ivir
-avir
-navir
-ovir
Influenzae
HIV
Protease inhibitors
"other" viruses (could be HIV + other)
-ivir
Influenzae
-avir
HIV
chapter 19 review
what is a virus
experiements with viruses provided key…
use of viruses
virus
Infectious partcle consiting of genes packaged in a protein c…
nucleic acids
gene transfer in gene therapy
nucleic acid surrounded by a protein coat
what is a virus
Infectious partcle consiting of genes packaged in a protein c…
experiements with viruses provided key…
nucleic acids
40 terms
Viral Diseases - Generic info
dsDNA
ssDNA (rare)
dsRNA (rare)
ssRNA
Herpesvirus... Adenovirus... Hepadnavirus
parvovirus... (fifth disease)
reovirus... (mild respiratory infections)
rhinovirus... influenzavirus
dsDNA
Herpesvirus... Adenovirus... Hepadnavirus
ssDNA (rare)
parvovirus... (fifth disease)
99 terms
MIC 102 Midterm 2 Definitions
virion
envelope
capsid
spikes
a complete infectious particle
coat made up of lipids, proteins, and carbohydrates obtained…
protein coat that surrounds the nucleic acid
carbohydrate-protein complexes that project from the surface…
virion
a complete infectious particle
envelope
coat made up of lipids, proteins, and carbohydrates obtained…
33 terms
Chapter 13 Viruses
DNA ENVELOPED Virus
Characteristics of Viruses
Host Range
Bacteriophages
Poxviridae... Herpesviridae... Hepadnaviridae
Obligatory intracellular parasites... Contain DNA or RNA... Contain…
The spectrum of host cells a virus can infect... Most viruses in…
viruses that infect bacteria... Range from 20 nm to 1000 nm in l…
DNA ENVELOPED Virus
Poxviridae... Herpesviridae... Hepadnaviridae
Characteristics of Viruses
Obligatory intracellular parasites... Contain DNA or RNA... Contain…
32 terms
Viral Information
What are the rare types of nucleic aci…
+ssRNA
-ssRNA
Capsid
ssDNA and dsRNA
Can act as its own mRNA to manufacture new viral proteins
Must transcribe mRNA before it can begin replication
A protein shell surrounding nucleic acid in order to protect…
What are the rare types of nucleic aci…
ssDNA and dsRNA
+ssRNA
Can act as its own mRNA to manufacture new viral proteins
35 terms
Chapter 13 Virology
characteristics of viruses
Virion structure
where do viruses grow
virus indentification
obligatory intracellular parasites... infect all form of life... co…
Nucleic acid ( DNA or RNA)... Capside- capsomeres... envelope... spikes
living cells
serological tests... nucleic acids
characteristics of viruses
obligatory intracellular parasites... infect all form of life... co…
Virion structure
Nucleic acid ( DNA or RNA)... Capside- capsomeres... envelope... spikes
43 terms
Micro Quiz 3 Viral replication
Viruses unique characteristics
What is a positive RNA virus?
What is a negative RNA virus?
What must negative RNA viruses carry w…
1. Protein coat called a capsid... 2. Genetic material (DNA or R…
It means that the RNA is just like messenger RNA (mRNA). When…
When a negative stranded RNA virus enters a cell, they are no…
The virus must carry in their capsid an enzyme called RNA-dep…
Viruses unique characteristics
1. Protein coat called a capsid... 2. Genetic material (DNA or R…
What is a positive RNA virus?
It means that the RNA is just like messenger RNA (mRNA). When…
467 terms
Virology Cumulative Spring 2016
Baltimore classification
Overall DNA is used to make
When there is single stranded DNA of a…
Why cant exonuclease bind to certain s…
splits viruses into 7 groups... 1)dsDNA 2)ssDNA 3)dsRNA 4)+ssRNA…
mRNA which is then used to make protein and later aids in dup…
the complimentary strand must be made then normal viral repli…
it does not have a traditional 5' and 3' end
Baltimore classification
splits viruses into 7 groups... 1)dsDNA 2)ssDNA 3)dsRNA 4)+ssRNA…
Overall DNA is used to make
mRNA which is then used to make protein and later aids in dup…
63 terms
Virus Replication
What is the aim of the virus replicati…
What do viruses use in order to produc…
Virus Replication Cycle 1 (At)
What part of a virus binds to receptor…
Produce many virions to infect new host cells
Host ribosomes
Attachment
Viral Surface proteins
What is the aim of the virus replicati…
Produce many virions to infect new host cells
What do viruses use in order to produc…
Host ribosomes
18 terms
ch. 13
Cytopathic effect
Continuous cell lines
lytic cycle
lysogenic cycle
virally infected cells are detected via their deterioration
are used in cell cultures
phage causes lysis and death of the host cell
phage DNA is incorporated in the host DNA, phage conversion,…
Cytopathic effect
virally infected cells are detected via their deterioration
Continuous cell lines
are used in cell cultures
43 terms
MMI 133 Topic 6
Viruses
Viruses are covered in a :
Viral envelopes
Viral envelopes contain
are not living cells, but contain genetic information, nuclei…
protein coat (capsid) or a membranous envelope
surround the capsid of influenza viruses, and others found in…
viral and host cell glycoproteins
Viruses
are not living cells, but contain genetic information, nuclei…
Viruses are covered in a :
protein coat (capsid) or a membranous envelope
47 terms
Microbio, Viruses
Virus
Bacteriophage
Virion
Capsid
Has DNA or RNA. Has no: growth, metabolism, cytosol, organell…
Virus that infects bacteria
Extracellular Virus
Made up of Capsomeres. Protein coat protecting nucleic acid.…
Virus
Has DNA or RNA. Has no: growth, metabolism, cytosol, organell…
Bacteriophage
Virus that infects bacteria
17 terms
Animal Viruses
Adsorption through 1
Penetration through 2
Penetration through fusion, envelope o…
Uncoating 2
Spike or capsid proteins
Endocytosis (naked and envelope)
Envelope fuses with plasma membrane and envelope is left behind
Separation of capsid from nucleic acid core in host
Adsorption through 1
Spike or capsid proteins
Penetration through 2
Endocytosis (naked and envelope)
38 terms
virus and fungi
protein coat surrounding a virus
size of virus
what viruses have a glycoprotein envel…
what viruses do NOT have a glycoprotei…
capsid
20-300 nanometers
most RNA viruses - except picrorna and reo
most DNA viruses - except herpes
protein coat surrounding a virus
capsid
size of virus
20-300 nanometers
44 terms
Micro: #18 Viral structure, Replication, & Diagnosis
Early definition of virus:
Defining characteristics of viruses:
dsDNA (types & examples)
ssDNA (type & examples)
disease causing agent small enough to pass through a filter
1) obligate intracellular parasites... 2) DNA or RNA in genome... 3…
• circular - Papillomaviruses... • incomplete circular - *Hepa…
linear - Parvoviruses
Early definition of virus:
disease causing agent small enough to pass through a filter
Defining characteristics of viruses:
1) obligate intracellular parasites... 2) DNA or RNA in genome... 3…
62 terms
Virus Lecture 1
GENERAL CHARACTERISTICS OF VIRUSES
what are obligatory intracellullar par…
can both bacteria and viruses be oblig…
what type of genome do viruses have?
....
can only be maintained inside a living cell
yes, but viruses are not composed of cells
DNA or RNA
GENERAL CHARACTERISTICS OF VIRUSES
....
what are obligatory intracellullar par…
can only be maintained inside a living cell
10 terms
HIV Guide
Structure
Genome
Viral Enzymes
Anti-receptor
Enveloped, Peomorphic, rod, cone shaped, genome, NP core matr…
+ sense ssRNA 2 copies
RT, IT, PT, packaged in core
gp120
Structure
Enveloped, Peomorphic, rod, cone shaped, genome, NP core matr…
Genome
+ sense ssRNA 2 copies
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