Block D

Question 1

What are enteric viruses and give an example

Answer 1

ingestion of faecal material which replicates in the gut. eg polio

Question 2

What are arboviruses and give an example

Answer 2

replicates in tissues of insect which is infected by host. eg flaviruses

Question 3

What are hepatitis viruses and give an example

Answer 3

all viruses which cause liver disease

Question 4

Virions have enzymes that assist with infection, describe how lysozymes work

Answer 4

-makes hole in cell wall
-lyses bacterial cell

Question 5

Virions have enzymes that assist with infection, describe how neuraminiclases work

Answer 5

-enzymes that cleave glycosidic bonds
-allow viruses to leave cell

Question 6

Name 3 methods viruses use to release from a cell

Answer 6

-cell lysis
-exocytosis
-budding of enveloped viruses