Virus

Kahlen Ng
Mind Map by Kahlen Ng, updated more than 1 year ago
Kahlen Ng
Created by Kahlen Ng about 5 years ago
214
11

Description

obligate, intracellular parasites
Tags

Resource summary

Virus
1 obligate, intracellular parasites

Annotations:

  • they can exist outside host cell and doing nothing. but they reproduce inside host cell
1.1 can't produce ATP on their own
1.2 not cellular
2 origin

Annotations:

  • may need some reading abt the hypothesis
2.1 – escaped-genes hypothesis
2.2 – degradation hypothesis
2.3 – RNA world-origin hypothesis
3 why do we care
3.1 increase diversity of life
3.2 genetic info research
3.3 infects all form of cellular life
3.3.1 each human cell can be infected by at least one type of virus
3.3.1.1 how to prevent viral infection
3.3.1.1.1 get vaccinated
3.3.1.1.2 antiviral drug
3.3.1.1.2.1 interfere virus genome replication
4 epidemic
4.1 Ebola
5 pandemic
5.1 AIDS
6 Morphology
6.1 nonenveloped
6.2 enveloped
7 genetic material

Annotations:

  • single/double stranded linear/circular 
7.1 DNA
7.2 RNA

Annotations:

  • Could be double or single stranded.  most RNA(not just abt virus) are single 
7.2.1 +ve sense
7.2.2 -ve sense
7.2.3 ambisense
7.3 how do virus copy their genome
7.3.1 RNA replicates function as RNA dependent RNA polymerase
7.3.2 reverse transcriptase
7.3.2.1 use RNA as a template to produce DNA
8 viral replication
8.1 lytic cycle

Annotations:

  • produce virons and kill host cell
8.2 lysosome

Annotations:

  • no virions produced have dormant stage in host cell
8.3 6 common phases
8.3.1 1.attach to a host cell and enter into cytosol
8.3.1.1 2. transcription of viral genome and production of viral protein

Annotations:

  • – host cell machinery used for translation – some viruses have proteases to cut their own proteins
8.3.1.1.1 3. replication

Annotations:

  • – host cell supplies nucleotides – RNA genomes have RNA replicases – retroviruses have reverse-transcriptases
8.3.1.1.1.1 4. assembly of new generation of virions

Annotations:

  • – genome packaged into capsid 
8.3.1.1.1.1.1 5. exist from the infected cells
8.3.1.1.1.1.1.1 6. transmission to a new host
8.3.1.1.1.1.1.2 budding (enveloped virus)
8.3.1.1.1.1.1.3 bursting (naked virus)
8.3.1.2 plant virus:
8.3.1.2.1 insect biting the plant; the cell wall disrupted, virus come in
8.3.1.3 animal / bacteria virus
8.3.1.3.1 attach to a specific molecule on cell wall / plasma membrane
Show full summary Hide full summary

Similar

Veterinary Nursing Instruments
rowan.bray
Quiz - Viruses
DolphDog
Viruses
marthas2705
Pharmacology I: Final Quiz
MRaythe
Skin pathology
Justin Veazey
Parasites photos
Hannah Spicer
Pharmacology
Justin Veazey
Prescriptions (veterinary)
Lyndsey Cullum
Thermoregulation
Joanne Wills
BVMS 3 - Term II Parasites
Marielle83