1.Viral uncoating A)involves separation of the nucleic acid from the capsid B)is

Question

1.Viral uncoating

A)involves separation of the nucleic acid from the capsid

B)is seen in animal viruses

C)occurs after the penetration stage

D)All of the above

2.Which of the following statements is incorrect about viral envelopes?

A)Envelopes help the virus disguise itself from the immune system.

B)Envelopes make the virus more durable for survival outside the body

C)Envelopes contain special viral proteins called spikes.

D)Envelopes help the virion attach to host cells.

E)Envelopes are obtained as a virus leaves the host cell membrane.

3.Viral classification is based on

A)type of nucleic acid

D)all of the above

B)morphology

E)virsues can't be classified

C)replication strategy

Explanation / Answer

1. Option D is correct. Virus has two parts capsid (outer covering) and nucleic acid (DNA or RNA). Uncoating of virus involves separation of the nucleic acid from the capsid which is cspecific to animal virus. Uncoating mau occurs before or after entering the host cell.

2. Option E is correct. Envelops is outer covering of virus composed of proteins and thus can not be obtained as virus. A virus always contain nucleic acid.

3. Option D is correct. Viruse are classified mainly on the type of nucleic acids present for example DNA or RNA virus, but also classified on the basis of morphology for example octahedral virus, and also classified on the basis of replication strategy.

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