Virology Flashcards
What is unique about a viruses replication
It assembles
What is the structure of a virus
Nucleic acid genome
Protein capsid
Sometimes envelop and envelope proteins
What is Ebola
Haemorrhagic fever
Reservoir - fruit bats etc
Transmission - direct contact
Symptoms - extensive
What are two examples of enveloped viruses
Influenza
Herpes simplex
What is lysine my
How virus incorporates genetic material into host genome
What are the two means of entry into a host
Direct fusion
Endocytosis
How are non enveloped and enveloped viruses released
Non envelop - cell lysis
Envelop - exocytosis (budding )
How do viruses enter the host
Resp tract
GI tract
Urogenitary tract
Blood
How can a virus spread once within the host
Stay Sam e
Haematological route
Neural route
Why do viruses cause disease in certain tissues
Viruses heavily dependent on host
Viruses need correct properties
How can a virus cause damage to the host (incl viral and host factors)
Viral factors - cell lysis, cell-cell fusion, inhibition of host cell cycle
Host factors - apoptosis, inflammation
What are some methods of controlling a virus
Antiviral drugs
Vaccine
What is a virus
Small
Non cellular
Obligate parasite
