Viruses Flashcards
Micro Exam 4
Capsid
protective protein coat
-protects and means of attachment
Capsomere
proteinaceous subunits that make a capsid
Envelope
outer membranous layer made of phospholipid and protein surrounds capsid
Glycoprotein (spike)
composed of phospholipids and proteins, virally-coded, host recognition
What is a naked virus?
lacks an envelope
How do viruses recognize host cells?
Glycoproteins and envelope proteins
Virus Reproduction steps:
What are the 3 ways a virus enters a host cell?
How do naked viruses leave a host?
exocytosis
or by causing the host cell to burst
How do enveloped viruses leave a host?
Budding- acquire envelope as it emerges from the host cell plasma membrane
Latency
when animal viruses remain dormant in host. may be prolonged
Syncytia
giant cells with many nuclei
Koplik’s Spots
oral lesions that start 2-3 days after infected with malaria
Maculopapular Rash
rash on head spreads to trunk and rest of body.
red patches gradually fade to brown
Measles host organisms?
Humans