IB Biology HL A2.3.1 Hl Common Structural Features Questions

Practise IB Biology HL A2.3.1 by identifying capsids, nucleic acid, obligate parasitism and the structural features shared by viruses.

Exam points

Identify viral genetic material as DNA or RNA and the protein capsid, together with the absence of cytoplasm or ribosomes.
Explain why viruses are obligate parasites and not classified as living organisms by linking host dependence to absent metabolism, ribosomes or cellular structure.
Use a labelled virus image or electron micrograph to identify the capsid and other visible structural components.

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Study A2.3.1 (HL)—Common structural features conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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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 IB Biology HL A2.3.1 Hl Common Structural Features Questions 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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IB Biology HL A2.3.1 Hl Common Structural Features Questions question 1