Bacteriophages L5 Flashcards
What is a Bacteriophage?
- Obligate Parasite
- Virus
T/F Viral genome is only double stranded
False.
Can be double stranded or single stranded
State the stages of Infections (7)
- Adsorption
- Penetration
- Gene expression
- Nucleic acid Replication
- Synthesis of structural proteins
- Assembly of Virions
- Lysis-Release
What are the two stages of phages?
Early and Late
Is T7 Phage factor independent of factor dependent?
BOTH
What happens 12 mins after infection?
Early stops completely and late stage keeps going
Why aren’t the RNS’s made at the beginning?
Because the GP1 encodes for the late RNA, which is after the start of the early RNA
What does the early RNA stop after late starts?
GP2 stops the early transcription
What are the two phases that phages can choose?
Lytic or Temperate (lysogenic)
Bacteriophage lambda is what type of phage?
Temperate
What are the two antiterminators in the lytic process?
N and Q
What stage do you see the N antiterminator?
Middle Stage
What stage do you see Q antiterminator?
Late Stage
What gene is only gene NOT transcribed in the Lytic phage?
CI
What does CI do?
Its a repressor for Lytic Growth
