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

Chlorophyll contains a magnesium ion (Mg2+) at its center, coordinated within a porphyrin ring structure. This magnesium is crucial for photosynthesis, absorbing light energy and converting it to chemical energy. The green color results from chlorophyll absorbing red and blue wavelengths while reflecting green light.

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