Quiz Practice – Biology Entry Test MCQ #2

(MCQ from UHS MDCAT 2024)

Q. The complete, mature & infectious particle of virus is known as:

• A. Genome
• B. Capsomere
• C. Capsid
• D. Virion

Correct Answer: D. Virion

Explanation:

• A virion is the complete, mature, and infectious form of a virus outside the host cell. It consists of:
  • Genetic material (DNA or RNA)
  • Capsid (protein coat)
  • And in some viruses, an envelope
• Each component plays a role in protecting the viral genome and helping it infect new cells.
  • Genome → The genetic material only (DNA or RNA)
  • Capsomere → Individual protein subunits that make up the capsid
  • Capsid → Protein shell that encloses the genome, but not infectious on its own

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