Asked in PMC Practice Test 16 (2021) 2021Moderate

What is the viral nucleocapsid made up of?

Correct answer: A. genome and capsid

  • A. genome and capsid
  • B. capsid and spikes
  • C. envelope and capsid
  • D. capsomeres and genome

Explanation

FACTUAL RECALLThe virions are composed of a central core of nucleic acid, either DNA or RNA, which is also known as the genome and is surrounded by a protein coat, the capsid. Hence, the name nucleocapsid.

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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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