Fiona puts her hands into a sinkful of lukewarm water; Luke puts his hands into a sinkful of ice-cold water. Based on what is known about neural transmission, you could predict that the action potentials will:
A. be weaker in Fiona's system because the stimulus is less intense
B. be the same in both individuals due to the all-or-none principle
C. travel a shorter distance in Luke's system because the stimulus is more intense
D. travel more quickly in Luke's system because the stimulus is more intense

Both Fiona and Luke will generate action potentials of the same magnitude despite the different temperatures of water they are in, due to the all-or-none principle of neural transmission. While the frequency of firing may differ, the individual action potentials themselves do not vary in strength. Thus, the prediction that action potentials will be the same applies here. ;

Answered by GinnyAnswer | 2025-07-06

Both Fiona and Luke will generate action potentials of the same intensity due to the all-or-none principle of neural transmission, regardless of the water temperature. The perception of temperature will differ, but the actual action potentials remain unchanged in strength. The correct choice is B: be the same in both individuals due to the all-or-none principle.
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Answered by Anonymous | 2025-07-14