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

> Use the graph of the unmyelinated neuron in the diagram below to read off... Marked mark by mark. Q2.6.1(b), 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(b). Marks: 1. Not yet checked by a teacher.

## Question 2.6.1(b) (1 mark)

Unmyelinated neurons carry nerve impulses more slowly than myelinated neurons. The diagram shows how impulse speed changes with axon diameter in an unmyelinated neuron.

Use the graph of the unmyelinated neuron in the diagram below to read off the axon width, in µm, that goes with a nerve impulse travelling at 15 m/s.

Figure: Line graph titled Unmyelinated neuron. Axon diameter in micrometres runs along the bottom from 0 to 600 and impulse speed in metres per second runs up the side from 0 to 20. A straight line rises from 2.5 metres per second at a diameter of 100 micrometres to 15 metres per second at 600 micrometres.

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

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