Which ion can pass through the cell membrane when it is at rest?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
23 May 2018
Last updated
28 May 2026

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Explanation

During the resting state, the cell membrane is selectively permeable and primarily allows potassium ions (K+) to move across it, while restricting the passage of other ions such as sodium (Na+), chloride (Cl-), and phosphate (PO4 2-).

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