Outline4 marksStandard
A new virus, Argoviridae, has been isolated. Its genome consists of single-stranded DNA.
Outline how viruses are classified based on the type of nucleic acid and whether it is single or double stranded.
CAIE A Level Biology 9700 · Classification, biodiversity and conservation
Classification, biodiversity and conservation: outline question
How this question is marked
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
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