The figure shows the changes in potential difference across the membrane of a neurone over a period of time. The membrane was stimulated at time A and time B with stimuli of different intensities. a. Stimulus B resulted in an action potential. Describe what is occurring at C, D and E. b. Suggest why stimulus A did not result in
Chapter 15, End Of Chapter Questions #6
The figure shows the changes in potential difference across the membrane of a neurone over a period of time. The membrane was stimulated at time A and time B with stimuli of different intensities.
a. Stimulus B resulted in an action potential. Describe what is occurring at C, D and E.
b. Suggest why stimulus A did not result in an action potential being produced whereas stimulus B did.
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Answer
a. The resting membrane potential of the membrane of neurons are -80 mV. When a stimulus is provided, membrane depolarization occurs and the membrane …View the full answer
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Cambridge International AS And A Level Biology
4th Edition
Authors: Mary Jones, Richard Fosbery, Jennifer Gregory, Dennis Taylor
ISBN: 9781107636828