Virology

Question 1

Tropism

Answer 1

Requiring a specific host to replicate in (e.g., animals, plants, bacteria)

Question 2

Antigenic shift

Answer 2

Major change within the genetic structure of a virus.

Question 3

Antigenic drift

Answer 3

Minor changes in the genetic structure that occur during replication and thus can occur all the time.

Question 4

Is antigenic shift or drift responsible for seasonal flu vaccines being necessary?

Answer 4

Drift

Question 5

Virion

Answer 5

A virion is a virus particle (measured in nm)
Obligate intracellular pathogens. Cannot self-replicate.
Non-living but infectious