Chapter 13- Viruses

Question 0

three morphologies of viruses

Answer 0

1. helical (long, rigid, or flexible)
2. polyhedral (many sides, capsid)
3. complex (complex structures)

Question 1

what are viruses made of?

Answer 1

• Nucleic acid (either DNA OR RNA)
• capsid- protein coat on the outside
• some have an envelope, but not all

Question 2

bacteriophage

Answer 2

a virus that infects and replicates within bacteria

Question 3

steps of the viral replication cycle

Answer 3

1. attachment
2. penetration
3. biosynthesis
4. maturation
5. release

Question 4

lytic cycle

Answer 4

host cell dies

Question 5

lysogenic cycle

Answer 5

host cell survives