The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids,…
Biomolecules · Class 12 · JEE Main Previous Year Question
The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids, 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.
- a
I and II only
- b
I and III only
- c✓
I, II and III
- d
III only
I, II and III
Step 1: Potassium Ion Functions — ions are the most abundant cations within cell fluids. They are essential for activating many cellular enzymes.
Step 2: Role in Energy and Signals — They participate in the oxidation of glucose (glycolysis/respiration) to produce ATP and are critical for the transmission of nerve impulses.
Step 3: Conclusion — All three statements (I, II, and III) accurately describe the biological roles of potassium. Correct option is (c).
Remember: The sodium-potassium pump maintains the concentration gradients necessary for these functions.
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