What are the main intracellular electrolytes? 1. K+ 2. Na+ 3. Phosphate 4. Sulfate
a. 1, 3, and 4 only
b. 2, 3, and 4 only
c. 1 and 2 only
d. 1, 2, 3, and 4
ANS: A
Potassium (K+), magnesium (Mg2+), phosphate (PO43−), sulfate (SO42−), and protein constitute the main intracellular electrolytes.
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