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VIRUSES

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VIRUSES
VIRUSES
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Tobacco mosaic
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Rubella
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Rabies
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Herpes
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Cold
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Ebola
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Influenza
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Dengue
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
T-Phage
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Avian influenza
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Hepatitis
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Aids
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
A VIRUS is either DNA or RNA, that is protected by a
protein coat called a CAPSID.
CAPSID
DNA
VIRUS
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Are Viruses Living?
Properties of Living Organisms Properties of Viruses
Breathes (respires)
Doesn’t breathe
Metabolizes
Doesn’t metabolize
Grows
Doesn’t grow
Reproduces
Reproduces
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
How small is a virus?
Viruses range in size from 20 nanometers (nm) – 250 nanometers (nm)
atom
proteins
1 nm = 0.000000001 meters
viruses
0m
animal
cells
bacteria
10-6 m
10-5 m
10-7 m
10-8 m
10-9 m
10-10 m
If a cell was the size of your classroom, then an average virus would be
the size of a softball.
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Replication Phases
Phase I
I, II, III - Viruses enter
cell
- Attachment
- Penetration
- Losing virus protein
coat
IV - Replication
V - Release
- Assembly
Phase II
- Leaving the cell
Phase III
prof.sse Chiara Acchiardi, Manuela Bittolo,
Annamaria Boasso - I.T.I. Malignani - Udine
Phase IV
Phase V
Fly UP