# Life Sciences Paper 1, November 2024, question 2.6.1(a)

> The diagram below shows how the speed of nerve impulses changes with axon... Marked mark by mark. Q2.6.1(a), Life Sciences Paper 1 November 2024, 1 mark.

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Last updated: 2026-11-12

Subject: Life Sciences. Source: Based on Nov 2024 · Paper 1 · Q2.6.1(a). Marks: 1. Not yet checked by a teacher.

## Question 2.6.1(a) (1 mark)

The diagram below shows how the speed of nerve impulses changes with axon diameter in myelinated neurons. Read from the graph: what axon diameter, in µm, gives an impulse speed of 60 m/s in a myelinated neuron?

Figure: Line graph titled Myelinated neuron. Axon diameter in micrometres runs along the bottom from 0 to 25 and impulse speed in metres per second runs up the side from 0 to 100. A straight line rises from about 16 metres per second at a diameter of 4 micrometres to about 96 metres per second at 24 micrometres, passing through 60 metres per second at 15 micrometres.

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[Answer this question](https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-6-1-a/) and see it marked mark by mark, with the reason for every lost mark.

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