Multiple choice general knowledge science & technology

What is the metallic element at the center of a molecule of the green pigment chlorophyll?

  1. Managanese

  2. Chromium

  3. Magnesium

  4. Calcium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Magnesium is the central metal ion in chlorophyll molecules. Chlorophyll is a porphyrin molecule with Mg2+ at its center, analogous to iron in hemoglobin. The magnesium ion is crucial for photosynthesis, absorbing light energy to convert CO2 to sugars.

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