A-LevelBiologyTransport in mammals9700/12 · May/June 2019 · Q301 Mark

The diagram shows a transverse section through an artery. [Figure: Transverse section through an artery with layer X labelled] Which statement describes the tissues present in layer X?

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Acollagen and smooth muscle only

Belastic fibres and collagen only

Celastic fibres and smooth muscle only

Delastic fibres, collagen and smooth muscle

✓ Correct answer

D: elastic fibres, collagen and smooth muscle

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Topic: Transport in mammals, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2019 Paper 1 Variant 2, question 30.

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