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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 and III only

Solution

Potassium ions play a crucial role in activating various enzymes, which is essential for numerous cellular processes, and they are also involved in the transmission of nerve signals alongside sodium ions. However, while potassium is important for cellular functions, it does not directly participate in the oxidation of glucose to produce ATP, which primarily involves other molecules.

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