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IB Biology HL 2.3.1 Common Structural Features of Viruses

Practise IB Biology HL 2.3.1 by identifying viral structure and explaining why viruses depend on host cells for replication.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify the viral capsid, nucleic-acid genome and obligate-parasitic mode of existence.
  • Explain why viruses are not living cells, using missing metabolism, cytoplasm or independent reproduction.
  • Use structural evidence to distinguish a virus from a cellular organism.

A2.3.1 (HL)—Common structural features question 1

[Maximum number: 1]

The table shows the number of amino acids that are different in the sequences of the protein FOXP2 from a human compared with four other primate species.

Table for Question A2.3.1 (HL)—Common structural features question 1 — IB Biology HL

Some infectious diseases in humans are caused by viruses that originated in other primates.

State one structural feature of a virus.

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