Introduction to Viruses.

Question 1

How are viruses classified? (four things)

Answer 1

According to:
Shape/ symmetry
Presence/ absence of envelop
Genome structure
Mode of replication

Question 2

What are the principles of viral culture?

Answer 2

Viruses need living things to stay alive, so cell line, tissue, or intact animal.
Cells grown in medium containing nutrient and a 5% CO2.

Question 3

Give three examples of important respiratory viruses.

Answer 3

Influenza
Rhinovirus,
Measles
Chicken pox

Question 4

Give three examples of important GI viruses.

Answer 4

noravirus,
Rotavirus,
Adenovirus

Question 5

Give three examples of important Neurological Viruses

Answer 5

Rabies,
herpes simplex virus,
enteroviruses.

Question 6

What viruses can cause tumour formation?

Answer 6

papillovirus,

retroviruses.

Question 7

How do viruses replicate?

Answer 7

Budding.

or inside bacteria

Question 8

Give a few examples of viral routes of transmission.

Answer 8

blood bourne, sexual, vertical, droplet, close contact.

Question 9

How do some viruses lead to cancer?

Answer 9

they can drive cell proliferation

they can prevent apoptosis

Question 10

How can you prevent viral infection?

Answer 10

Vaccination, screening etc.