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The correct statement (s) among I to III with respect to potassium ions that are abundant within the cell fluid is /are I. They activate many enzymes II. They participate in the oxidation of glucose to produce ATP III. Along with sodium ions they are responsible for the transmission of nerve signals

1. III only
2. I and II only
3. I and III only
4. I, II and III

Correct answer: I, II and III

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