How many bioelements make up approximately 99% of the human body's total composition?

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
27 Nov 2022
Last updated
28 May 2026

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Explanation

About 99% of the human body is made up of six key elements: oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. In addition to these, five other elements—sulfur, potassium, sodium, chlorine, and magnesium—constitute roughly 0.85% of the body's mass. Together, these 11 elements are essential for human life.

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