In viruses, a combined structure formed by the core (nucleic acid) and the capsid is:
Correct answer: A. Nucleocapsid
- A. Nucleocapsid
- B. Prion
- C. Envelope
- D. Capsomeres
Explanation
The capsid and nucleic acid together are known as the nucleocapsid.A prion is a type of protein that can trigger normal proteins in the brain to fold abnormally. Prion diseases can affect both humans and animals.A viral envelope is the outermost layer of many types of viruses. It protects the genetic material in its life cycle when travelling between host cells.The capsomere is a subunit of the capsid, an outer covering of protein that protects the genetic material of a virus.
This question appeared on the UHS MDCAT 2018 paper, which you can sit online with every answer explained.
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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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