Which of the following groups of macro-nutrients is a constituent of protein?

Agricultural Science WAEC 2007

Which of the following groups of macro-nutrients is a constituent of protein?

  • nitrogen,phosphorus and sulphur checkmark
  • calcium,magnesium and potassium
  • magnesium,calcium and phosphorus
  • sulphur,magnesium and potassium

The correct answer is: A

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