 Definition
 Infectious:
 Characteristics of viruses
 Characteristics that viruses share with living organisms
are…
 Characteristics that are unique to viruses are…
Bacteriophage
Animal DNA Virus
Animal RNA
Virus
DNA viruses
RNA viruses
Respiratory disease
AIDS
Smallpox
Influenza (flu)
Chicken pox
Mononucleosis
Cold sores
Common cold
Polio
Measles
Rabies
A virus consists of these
main parts:
 Genome (DNA/RNA)
 Capsid (protein)
 Envelope (lipid)
genome
capsid
Genome
 Know 5 characteristics:
Capsid
• Definition and purpose
• Naked virus:
Envelope
• Definition and purpose
 More complex
compared to other
types of viruses
 Head = naked
icosahedral capsid
 Tail = sheath with
fibers at the end
 Lytic cycle
 Lysogenic cycle