U7 LEC: INTRO TO VIROLOGY Flashcards
Intracellular organism, unable to reproduce itself outside a living host cell
Virus
Viruses are considered to be?
obligate
2 parts of a Virion
Protein Coat, Genetic Material
This is the entire, complete infectious unit or viral particle
Virion
T/F: The Virion is only infectious if it is fully assembled
True
Only contains Protein Coat
Prions
Most resistant form, proteinaceous infectious organism
Prions
Prions can only be killed through?
incineration
Only has the genetic material
Virioids
This refers to the protein coat.
Capsid
The Capsid is made up of?
Capsomeres
Size of Virus
20-200
All viruses are Haploid except?
Retrovirus
Virueses have no?
mitochondria
T/F: Viruses replicate by binary fission.
False
capable only of replicating within the cell
Bullet shaped virus
Rabies
Largest viruses
Variola (smallpox), Ebola
Smallest virus
Parvovirus
Viruses are resistant to?
antimicrobials and antibacterials
Treatment for Viruses
supportive
Viruses are primarily destroyed by?
effects of our immune system
Viruses are more resistant to ______ than bacteria
antiseptic
Viruses can survive long periods by?
freeze drying at -70C
This refers to weakened state of virus.
Attenuated
Inactivation of Viruses
- UV and Xray
- Chloroform and Ether
- Combination of Sodium hypochlorite and Formalin
Droplet infection
Influenza
Direct Conact
Papilloma virus
Direct Inoculation
Rabies virus
Transplacental
Herpes simplex virus
Ingestion
Hepatitis A virus (Foodborne Hepatitis)
Insect-borne / Arthropod-borne
Dengue virus
Dengue virus is caused by?
Aedes mosquito
Latent
Chickenpox (Herpesviridae)
DNA Viruses
- Hepadnaviridae
- Herpesviridae
- Poxviridae
- Papilllomaviridae
- Polyomaviridae
- Adenoviridae
- Anelloviridae
RNA Viruses
- Picornaviridae
- Sedoreoviridae
- Caliciviridae
- Hepeviridae
- Filoviridae
- Coronaviridae
- Flaviviridae
- Togaviridae
- Retroviridae
- Orthomyxoviridae
- Paramyxoviridae
- Pneumoviridae
- Rhabdoviridae
Helical
Tobacco Mosaic virus
Polyhedral
Adenovirus
Spherical
Influenza virus
Complex
Bacteriophage
Complex DNA Viruses
Poxviridae
Icosahedral DNA Vrisues
- Papillomaviridae
- Polyomaviridae
- Adenoviridae
- Anelloviridae
- Hepadnaviridae
- Herpesviridae
Icosahedral RNA Viruses
- Picornaviridae
- Sedoreoviridae
- Caliciviridae
- Hepeviridae
- Flaviviridae
- Togaviridae
- Retroviridae
Helical RNA Viruses
- Orthomyxoviridae
- Paramyxoviridae
- Pneumoviridae
- Rhabdoviridae
- Filoviridae
- Coronaviridae
Without or absence of envelope
Naked Virus
Naked DNA Virus
- Papillomaviridae
- Polyomaviridae
- Adenoviridae
- Anelloviridae
Enveloped DNA Viruses
- Hepadnaviridae
- Herpesviridae
- Poxviridae
Naked RNA Viruses
- Picornaviridae
- Sedoreoviridae
- Caliciviridae
- Hepeviridae
Enveloped RNA Viruses
- Flaviviridae
- Togaviridae
- Retroviridae
- Orthomyxoviridae
- Paramyxoviridae
- Pneumoviridae
- Rhabdoviridae
- Filoviridae
- Coronaviridae
Enveloped Viruses
- close contact, intercourse
- less stable
- no cell lysis
- less immunogenic
Naked Viruses
- oral fecal route
- stable
- released by lysis
- easy target, immunogenic
Nucleic DNA Viruses
- Hepadnaviridae
- Herpesviridae
- Papillomaviridae
- Polyomaviridae
- Adenoviridae
- Anelloviridae
Cytoplasmic DNA Virus
Poxviridae
Cytoplasmic RNA Viruses
- Picornaviridae
- Sedoreoviridae
- Caliciviridae
- Hepeviridae
- Filoviridae
- Coronaviridae
- Flaviviridae
- Togaviridae
- Retroviridae
- Orthomyxoviridae
- Paramyxoviridae
- Pneumoviridae
- Rhabdoviridae
IN SHORT LAHAT NG RNA VIRUSES
Baltimore Classification of Viruses
DNA Viruses
Class 1, 2
Baltimore Classification of Viruses
Class 1
double stranded DNA
- Nucleus
- Adenoviridae
- Herpesviridae
- Poxviridae
Baltimore Classification of Viruses
Class 2
single stranded DNA
- Nucleus
- Parvoviridae
Baltimore Classification of Viruses
RNA Viruses
Class 3, 4, 5
Baltimore Classification of Viruses
Class 3
double stranded RNA
- Cytoplasm
- Sedoreoviridae
Baltimore Classification of Viruses
Class 4
+ sense single stranded RNA
- Cytoplasm
- Picornaviridae
- Togaviridae
Baltimore Classification of Viruses
Class 5
- sense single stranded RNA
- Cytoplasm
- Orthomyxoviridae
- Rhabdoviridae
Baltimore Classification of Viruses
Reverse transcribing viruses
Class 6, 7
Baltimore Classification of Viruses
Class 6
single stranded RNA-RT
- Cytoplasm
- Retroviridae
Baltimore Classification of Viruses
Class 7
double stranded DNA-RT
- Nucleus
- Hepadnaviridae