Multiple choice

The most common ion present in the cell is

  1. phosphorus

  2. potassium

  3. iron

  4. sulphur
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Potassium is the most abundant intracellular cation in living cells, playing a crucial role in maintaining osmotic balance and membrane potential. Phosphorus and sulphur are primarily structural or metabolic components, while iron is a trace element.

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