BIOS 242 EXAM 1 REVIEW
1. infectious and extracellular form of a virus: Virions
2. A non-cellular infectious agent that has two characteristics: (1) It has ge-
netic material (RNA or DNA) inside a protective protein coat. (2) It cannot
reproduce on its own.: virus
3. : viruses infect all living organisms and are metabolically dependent on the host
cell
4. protein coat made of capsomeres (subunits): Viral Structure: Capsid
5. DNA or RNA can be single or double stranded; linear or circular: Viral
structure nucleic acid
6. lipid, protein, and carbohydrate coating on some viruses: Viral Structure:
Envelope
7. : Viral structure protein spikes
8. non cellular agents composed only of the prion protein
causative agent of spongiform encephalopathies: Describe the characteristics
of prions
9. non cellular infectious agents composed of only RNA
infect plants
transmitted via plant seeds: describe the characteristics of viroids
10. : Describe the general phases in the life cycle of animal viruses
11. : absorption
12. : penetration
13. : uncoating
14. : synthesis
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1. infectious and extracellular form of a virus: Virions
2. A non-cellular infectious agent that has two characteristics: (1) It has ge-
netic material (RNA or DNA) inside a protective protein coat. (2) It cannot
reproduce on its own.: virus
3. : viruses infect all living organisms and are metabolically dependent on the host
cell
4. protein coat made of capsomeres (subunits): Viral Structure: Capsid
5. DNA or RNA can be single or double stranded; linear or circular: Viral
structure nucleic acid
6. lipid, protein, and carbohydrate coating on some viruses: Viral Structure:
Envelope
7. : Viral structure protein spikes
8. non cellular agents composed only of the prion protein
causative agent of spongiform encephalopathies: Describe the characteristics
of prions
9. non cellular infectious agents composed of only RNA
infect plants
transmitted via plant seeds: describe the characteristics of viroids
10. : Describe the general phases in the life cycle of animal viruses
11. : absorption
12. : penetration
13. : uncoating
14. : synthesis
1/4
