EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which viral life cycle kills its host cell by rupturing the cell membrane?
A
lytic
B
mitosis
C
lysogenic
D
S phase
Explanation: 

Detailed explanation-1: -In the lytic cycle, a phage acts like a typical virus: it hijacks its host cell and uses the cell’s resources to make lots of new phages, causing the cell to lyse (burst) and die in the process.

Detailed explanation-2: -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-3: -The host cell is destroyed in the lytic cycle. The lytic cycle is a mode of viral replication in which a virus produces many copies of itself in the host cell and those copies proceed to burst the host cell on their way out. This bursting destroys the cell and may cause some of the symptoms of the viral infection.

Detailed explanation-4: -The difference between lysogenic and lytic cycles is that, in lysogenic cycles, the spread of the viral DNA occurs through the usual prokaryotic reproduction, whereas a lytic cycle is more immediate in that it results in many copies of the virus being created very quickly and the cell is destroyed.

Detailed explanation-5: -In the lytic cycle, the phage replicates and lyses the host cell. The third stage of infection is biosynthesis of new viral components.

There is 1 question to complete.