U6T3 – Nerves: The Resting Potential

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Nerves: The Resting Potential

1 / 10

How can charged ions cross a plasma membrane?

  • a) Simple Diffusion
  • b) Facilitated Diffusion
  • c) Active Transport

2 / 10

When an neurone axon is at rest, what charge is the extra cellular fluid compared to the cytoplasm?

  • a) Simple Diffusion
  • b) Facilitated Diffusion
  • c) Active Transport

3 / 10

Which word best describes the charge distribution across a resting axon plasma membrane?

4 / 10

Across a resting human neurone plasma membrane, what is the average potential difference?

5 / 10

The resting potential of a neurone is maintained in part, by the Sodium-potassium pump. But which of the following shows the correct movement of the ions?

6 / 10

The plasma membrane of a neurone at rest is most permeable to which ions via facilitated diffusion?

7 / 10

In a resting neurone, why do potassium ions move out via ion channels?

8 / 10

Name protein B in the above diagram.

9 / 10

Name protein A in the above diagram.

10 / 10

Name protein C in the above diagram.

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