Virus attachment requires energy?
Correct answer: B. No
- A. Yes
- B. No
- C. Provided by cell usually
- D. Provided by virus machinery
Explanation
The attachment of a virus to a host cell does not require energy. The process of virus attachment is typically mediated by specific viral surface proteins, which bind to specific receptor molecules on the surface of the host cell. This binding process is typically a highly specific and spontaneous interaction, and it is often the first step in the process of viral infection. Therefore, the attachment of a virus to a host cell does not generally require energy.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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