Solved UPSC CDS/OTA Question
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Q · Nervous SystemMedium · 45s
Which ion plays a major role in action potential generation?
TopicNervous System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Every step explained - no skipped algebra.
Sodium influx causes depolarization during action potential.
Final Answer: Option B - Sodium ion