Multiple choice

Mg

  1. Activates the enzymes of respiration and photosynthesis

  2. Involves in synthesis of DNA & RNA

  3. Constituent of the ring structure of chlorophyll

  4. All
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D Correct answer
Explanation

Magnesium (Mg) activates enzymes for respiration and photosynthesis, is involved in DNA and RNA synthesis, and is the central atom in the chlorophyll molecule.

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