Which of the following is/are not an essential micro-nutrient?

  • A
    Boron
  • B
    Nickel and cadmium
  • C
    Molybdenum
  • D
    Zinc

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$S$ - Statement: Sulfur is present in the structure of cysteine and methionine amino acids.
$R$ - Reason: Phosphorus does not participate in energy exchange processes.

Which mineral element is a structural component of enzymes involved in nitrogen metabolism?

Which of the following is the importance of $Cl^-$?

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