Understanding the phiKZ Jumbo Phage

In 2017, scientists discovered the phiKZ jumbo phage, a bacteriophage that infects bacteria and is notably hard to kill. This virus builds a nucleus-like structure inside its host, protecting its genetic material from bacterial defenses like CRISPR and RM systems. Despite attempts to breach this defense, the virus remains resilient, though not entirely invincible. The research highlights the unique evolutionary leap of the virus and its implications for understanding viral mechanisms.

What type of organism does the phiKZ jumbo phage infect?

• Bacteria

• Fungi

• Plants

• Humans

What unique feature does the phiKZ jumbo phage build inside its host?

• A double membrane

• A nucleus-like structure

• A protein shell

• A lipid bilayer

How does the nucleus-like structure of the phiKZ jumbo phage affect its replication process?

• It stops replication completely

• It has no effect on replication

• It accelerates replication

• It slows down replication

What is the significance of the phiKZ jumbo phage's strategy in the context of evolution?

• It has no evolutionary significance

• It is a leap in evolution

• It is a typical evolutionary step

• It is a step backward

What is the role of CRISPR systems in bacterial defense?

• To produce energy

• To slice genetic material

• To build cell walls

• To transport nutrients

Why are RM systems ineffective against the phiKZ jumbo phage?

• The nucleus-like structure protects the virus

• They are too slow

• They cannot detect the virus

• They are not present in bacteria

What was the outcome when researchers tried to smuggle an RM team into the nucleus-like structure?

• They accelerated phiKZ replication

• They failed completely

• They slowed down phiKZ replication

• They stopped phiKZ replication

What did scientists discover about other jumbo bacteriophages?

• They are all unkillable

• They also build nucleus-like structures

• They infect humans

• They do not have nucleus-like structures

What is a potential vulnerability of the phiKZ jumbo phage?

• It cannot replicate

• Its DNA is exposed

• It is susceptible to antibiotics

• Its RNA must exit the protective structure

What is the main reason the phiKZ jumbo phage is considered nearly unkillable?

• Its rapid replication

• Its ability to infect multiple hosts

• Its nucleus-like structure

• Its resistance to antibiotics