NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a virus only passes its genetic material to the cell without making copies of itself this means the virus is ____
A
active
B
latent
C
sleeping
D
None of the above
Explanation: 

Detailed explanation-1: -When a virus is present in the body but exists in a resting (latent) state without producing more virus. A latent viral infection usually does not cause any noticeable symptoms and can last a long period of time before becoming active and causing symptoms.

Detailed explanation-2: -There are a few relevant human viruses that have another phase of replication, usually referred to as the ‘latent phase’ – in other words, the virus lays dormant in this latent phase of replication. Latent infections have the ability to be reactivated into a lytic form.

Detailed explanation-3: -Such viruses are called “latent, ” and include Epstein-Barr virus (EBV), Varicella-Zoster virus (VZV), HIV, Herpesviruses, and Cytomegalovirus (CMV).

Detailed explanation-4: -Viruses cannot replicate on their own, but rather depend on their host cell’s protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.

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