NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes the lysogenic cycle?
A
A person who is infected with the herpes virus may develop a cold sore when the virus is in the lysogenic cycle.
B
The lysogenic cycle occurs mainly in extremely infectious diseases that rapidly cause infection.
C
In the lysogenic cycle, genetic material from the virus and host cells are integrated and are called a provirus.
D
In the lysogenic cycle, virus particles are produced and assembled within the host cell.
Explanation: 

Detailed explanation-1: -The lysogenic cycle definition is a viral reproductive stage where the virus’s DNA is being replicated using the host cell’s DNA. During lysogenic infection, the virus uses the host to help copy its DNA or genetic information, but it is not producing any proteins.

Detailed explanation-2: -Lysogeny, or the lysogenic cycle, is one of two cycles of viral reproduction (the lytic cycle being the other). Lysogeny is characterized by integration of the bacteriophage nucleic acid into the host bacterium’s genome or formation of a circular replicon in the bacterial cytoplasm.

Detailed explanation-3: -The integrated viral genome is called a provirus. The virus now can remain in the host for a long time to establish a chronic infection. The provirus stage is similar to the prophage stage in a bacterial infection during the lysogenic cycle.

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