Influenza and Covid

Question 1

Which is the most important type of Influenza?

Answer 1

Influenza A

Question 2

How many DNA strands does Influenza A viruses have?

Answer 2

8

Question 3

What is hemagglutanin (HA) and what does it do?

Answer 3

A surface protein on Influenza viruses which binds to the receptor on the cell surface

Question 4

What is the receptor used by Influenza virus to enter the cell?

Answer 4

Sialic acid residues

Question 5

What is neuraminidase (NA) and what does it do?

Answer 5

A surface protein on the Influenza viruses which cleaves the virus of the host cell membrane so it can be released

Question 6

Where does replication of the influenza genome take place in the cell?

Answer 6

Nucleus

Question 7

How does influenza viruses change?

Answer 7

Genetic drift and shift

Question 8

How come coronaviruses can have such a large genome?

Answer 8

Its polymerase has a simple form of proofreading with 3’->5’ exonuclease activity

Question 9

How does the coronaviruses enter the cell?

Answer 9

With the spike protein, which needs to be activated by cellular proteases to activate the virus. Use big range of receptors