Question

What is the first step in phage formation inside the bacterial cell?

A) tail formation
B) tail fibers are added
C) DNA packaging as the viral heads assemble
D) adherence to the pilus
E) lysis

Answer 1

The first step in phage formation within a bacterial cell is attachment, where the phage binds to the bacterial surface. This is followed by the penetration of the phage DNA into the host cell.

Step-by-step explanation:

The first step in phage formation inside a bacterial cell is known as attachment or adsorption to the host cell. This is where the bacteriophage, such as the T4 phage, uses its tail fibers and pins to recognize and bind to specific receptors on the bacterial surface. After the initial attachment, the phage enters the penetration stage, where its DNA is injected into the host cell. Despite various stages listed in the question, the correct answer to the student's query is DNA packaging during the viral heads assembly; however, the question could be considered a bit tricky due to the wording, and it may depend on the precise context provided by the course material or instructor. The assembly of viral components only occurs after the inject of viral genome and takeover of the bacterial cell's machinery.