BIO chapter 7 viruses

Home

Get App

Create

genetic element with an extra cellular state that requires a host cell to replicate, doesn't need genetic material to replicate =

virus
virus without an envelope =

naked virus
same virus can casue what

multiple diseases
all viruses have what as covering
- capsid
- may or may not have envelope
the more enzymes a virus has the more=

pathogenic it is
viruses categorized by
- The type of nucleic acid it has
- DNA = single, double
- RNA = single, double
bacteriophage =

virus that infects and replicates within bacteria
nucelocapsid =

the capsid and nucleic acid together
nucleic acid + scaffolding =

viral core
why can't viruses live outside of host

they have no metabolic capabilities
what does body do when a virus has an envelope

produce antibodies
viral enzymes are found where

in the nucleocapsid
what is the virus infectious cycle
- adsorption
- penetration
- uncoating
- synthesis
- assembly
- release
adsorption =

specific attachment of virus
penetration =

entry of viral genome
uncoating =

release of viral genome
synthesis=

new viral products made
assembly =

new viruses are made in the cell
release =

often causes the host cell to lyse
what three ways viruses are detected in the lab
- using live animal inoculation
- using bird embryos
- using cell (tissue) cultures
5 different things that can happen to a cell as a result of viral infection
- death to host cell
- proliferation of cells
- fusion
- transformation
- no change
viroids =
- plant pathogens
- naked RNA
prions =
- not a living organism
- defectively folded host protein
- casues "spongiform encephalopathy"
- ie MAD COW DISEASE
- "slow viruses"

Author

elevatedsound7

198400

Card Set

BIO chapter 7 viruses

Description

viruses

Updated

2013-02-11T21:42:02Z

Show Answers