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CAIE A-Level Biology 1.2.7 Virus Structure and Envelopes Question Bank

Practise virus-structure questions by identifying non-cellular particles, DNA or RNA cores, protein capsids, capsomeres and optional phospholipid envelopes.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • describe viruses as non-cellular particles with DNA or RNA enclosed by a protein capsid
  • distinguish capsids or capsomeres from optional phospholipid envelopes in diagrams
  • compare viruses with cells by noting no ribosomes and reliance on host protein synthesis

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