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Life Sciences Paper 1, November 2024, question 2.6.2(a)

Life Sciences P1 · Human nervous system
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Two graphs show impulse speed (m/s) against axon diameter (µm) for neurons from a different mammal. Myelinated neurons have axon diameters of 4 to 24 µm and unmyelinated neurons have axon diameters of 100 to 600 µm.
2.6.2(a)2 marks
Study the two graphs below. Use them to describe how the speed of nerve impulses in myelinated neurons compares with the speed in unmyelinated neurons.

NSCBased on Nov 2024 · Paper 1 · Q2.6.2(a)

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What examiners found

Candidates quoted numbers where the general trend was asked for.

In our words. Source: Department of Basic Education, NSC 2024 Diagnostic Report, Part 1 (Book 1), Q2.6.2.

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