Chapter 13 - Viruses & Prions

Question 1

Are viruses particular when selecting a host

Answer 1

Yes

Question 2

What are 3 shapes of viruses

Answer 2

Complex
Helical
Polyhedral

Question 3

What 4 ways are viruses classified

Answer 3

Nucleic acid
Presence of envelope
Shape
Size

Question 4

What is lysogeny regarding viruses

Answer 4

Modified replication cycle

Question 5

What is lysogenic conversion regarding viruses

Answer 5

Turns bacterium from harmless to pathogen

Question 6

What is a virus that remains dormant in host cells

Answer 6

Latent virus

Question 7

What is the term for a proteinaceous infectious agent that lacks nucleic acid

Answer 7

Prion

Question 8

Do prions have nucleic acid

Answer 8

No

Question 9

How are prions destroyed (2)

Answer 9

Incineration

Autoclaving

Question 10

What system of the body are most prion disease expressed

Answer 10

Nervous system

Question 11

What happens with the brain with prion disease

Answer 11

Large vacuoles form

Question 12

What are the 2 forms of spongiform encephalopathies from prions

Answer 12

Bovine Spongiform encephalopathy disease (BSE)

Variant Creutzfeldt Jacob Disease

Question 13

Name 3 diseases prions may be behind

Answer 13

Alzheimer’s
Parkinson’s
ALS