IB Biology HL A2.3.1 Hl Common Structural Features Questions

Viruses are non-cellular obligate parasites with a fixed small size. Their genome is either DNA or RNA inside a protein capsid; they lack cytoplasm, ribosomes and most metabolic enzymes.

Exam points

Describe viruses as non-cellular obligate parasites with a fixed small size.
State that a viral genome consists of either DNA or RNA surrounded by a protein capsid.
State that viruses lack cytoplasm, ribosomes and most metabolic enzymes.

[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 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