Question

Which statements describe a bacteriophage? Select all that apply.

Answer 1

Options:

a.    It is a type of virus that infects bacteria.

b. It is a type of bacteria that infects viruses.

c. It is a virus consisting of a protein coat and a DNA core.

d. It is a bacterial strain consisting of protein and a DNA core.

Answer:

Option-(A, C): It is a type of virus that infects bacteria, and it is a virus consisting of a protein coat and a DNA core.                                                                                                                          

Explanation:

• The bacteriophage is a form of unicellular cell that comprises of a very specific form of structure, having the genetic materials intact inside the protein coat and the rest of the body is termed to be more of a crystalline in nature. As, the phage is categorized for having the main host as the bacterial cell, and it replicates itself by using the two main pathways which are the following:

1. Lytic cycle,
2. Lysogenic cycle.

Answer 2

Which statements describe a bacteriophage? Select all that apply.

a. It is a type of virus that infects bacteria.

b. It is a type of bacteria that infects viruses.

c. It is a virus consisting of a protein coat and a DNA core.

d. It is a bacterial strain consisting of protein and a DNA core.

 

Answer:

A,C

Explanation:

Group of  viruses  that infect bacteria, and makes use of the bacteria resources  for its own reproductive activities are called  Bacteriophage. They vary in shape and sizes,  specific to Bacteria  at infection and  present all around us.

There genetic material are either DNA or RNA,and protected by layers of  protein inform of coat (encapsulated) called capsid. They usually attached to the bacteria host with the  aid of tail of fibres directly attached to the coat.

They have two life-cycle for colonizing the bacterial host,

The Lytic cycle where the virus take over the entire bacteria host machinery, colonized it with phages and makes the bacterial to explode, killing it.

Lysogenic cycle where the virus  colonize the entire genetic machinery of the host bacteria chromosomes by inserting its DNA into the host to become  Viral DNA (and replicate) this through out the host system.

Thus  taken over the entire system of the host

They are used medically for treating infection, in food industry, diagnosis of diseases etc,