139- Influenza Flashcards
Which virus is RNA double stranded, icosehedral and uneveloped?
Reoviridae (rotavirus)
Which viruses are RNA single -ve strand, helical and enveloped?
Arenavirus Bunyavirus Filovirus Orthomyxovirus Paromyxovirus Rhabdovirus Lyssavirus (rabies)
Which viruses are RNA single +ve strand, non enveloped and icosehedral?
Caloviridae
Picornavirus
Astrovirus
Poliovirus
Which viruses are RNA single +ve strand, enveloped and icosahedral?
Flavivirus
Retrovirus
Togavirus
Which virus is RNA, single +ve strand, enveloped and helical?
Coronavirus
WHich virus is DNA single strand with no envelope?
Parvovirus
Which viruses are DNA double stranded, non enveloped?
adenovirus
papilloma virus
palomiviridae
Which viruses are DNA double stranded, enveloped?
Hepadnavirus
Poxvirus
Herpes
What are the theories of ageing?
Error theory Free radical theory Immune theory Programmed theory Neuroendocrine theory
What is the error theory of ageing?
Accumulation of errors in cell function- cells cannot survive
What is the free radical theory of ageing?
Free radicals which occur due to cell metabolism increase with age and damage cells
What is the immune theory of ageing?
Decrease in thymus size= decrease T cells= cells age
What is the programmed theory of ageing?
biological clock!
What is the neuroendocrine theory of ageing?
hormone production decreases= cell survival decreases
How do you tell a virus from a prion?
Virus: DNA/RNA, surrounded by protein/lipoprotein, replicates in cell
Prion: small glycoprotein, ?replicates, causes CJD and GSSD
