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Question: Answered & Verified by Expert
The mineral ion that acts as an activator for both RuBisCo and PEPcase enzyme is
BiologyMineral NutritionNEET
Options:
  • A Copper.
  • B Magnesium.
  • C Zinc.
  • D Molybdenum.
Solution:
2570 Upvotes Verified Answer
The correct answer is: Magnesium.
Mg2+ is an activator for both ribulose bisphosphate carboxylaseoxygenase and phosphoenol pyruvate carboxylase, both of which are critical enzymes in photosynthetic carbon fixation; Zn2+ is an activator of alcohol dehydrogenase and Mo of nitrogenase during nitrogen metabolism. Cu is associated with certain enzymes involved in redox reactions

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