Aragón PAU Biology Practice Questions - Aragón PAU Biology (Biología 2o Bachillerato) Exam

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Which inorganic bioelement functions as an essential cofactor for chlorophyll and is required for muscle contraction and enzymatic ATP cleavage?

Potassium (K+) Calcium (Ca2+) Iron (Fe2+/Fe3+) Magnesium (Mg2+)

Correct Answer:

Magnesium (Mg2+)

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