IMMUNOLOGY

Detailed explanation-1: -In the lytic cycle, the phage replicates and lyses the host cell. The third stage of infection is biosynthesis of new viral components. After entering the host cell, the virus synthesizes virus-encoded endonucleases to degrade the bacterial chromosome.

Detailed explanation-2: -Assembly-The host cell assembles the components into new copies of the virus. Lysis-The cell bursts open, resulting in its death and also in the release of more of the virus which can now go on to infect other cells.

Detailed explanation-3: -Replication (lytic cycle): The virus takes over the cell’s metabolism, causing the creation of new proteins and nucleic acids by the host cell’s organelles.

Detailed explanation-4: -Step 2: Penetration In the case of bacteriophages that adsorb to the bacterial cell wall, a bacteriophage enzyme “drills” a hole in the bacterial wall and the bacteriophage injects its genome into the bacterial cytoplasm (Figure 10.7A. 2).

Detailed explanation-5: -In a lytic cycle, the virus introduces its genome into a host cell and initiates replication by hijacking the host’s cellular machinery to make new copies of the virus. Once infection is complete, the newly replicated and assembled virus particles are released through lysis of the host cell into the surrounding waters.

Detailed explanation-6: -1) Attachment: In this step, the bacteriophage, attaches itself by it’s tail to the. 2) Digestion: In this step, the bacteriophage contains an enzyme called. 3) Injection: 4) Taking Control: 5) Multiplication: 6) Rupturing: 10-Feb-2018