NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the FIRST step in the virus reproduction process?
A
The virus must attach to the receptor site of a host cell
B
The virus digests the host cell’s DNA.
C
The viral DNA integrates into the host DNA.
D
The cell lyses and releases newly constructed viruses.
Explanation: 

Detailed explanation-1: -The first stage, attachment, involves viral proteins binding to the host cell surface. There, they interact with receptors specific to them and their host cells. The specificity of viral attachment is a key decider of the range of hosts a virus can affect.

Detailed explanation-2: -Attachment. It is the first step of viral replication. The virus attaches to the cell membrane of the host cell. It then injects its DNA or RNA into the host to initiate infection.

Detailed explanation-3: -Step 1: Attachment: The virus attaches itself to the target cell. Step 2: Penetration: The virus is brought into the target cell. Step 3: Uncoating and Replication: The enveloped virus loses its envelope, and viral RNA is released into the nucleus, where it is replicated. Step 4: Assembly: Viral proteins are assembled.

Detailed explanation-4: -The viral life cycle can be divided into several major stages: attachment, entry, uncoating, replication, maturation, and release.

There is 1 question to complete.