Hemoglobin contains which of the following ions?

  • A
    $Fe^{2+}$
  • B
    $Mg^{2+}$
  • C
    $Na^{+}$
  • D
    $Ca^{2+}$

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Similar Questions

Thyroxine,adrenaline,and melanin pigment are derived from which of the following amino acids?

Nitrogen is an important constituent of

$A$: The properties and types of amino acids vary.
$R$: The chemical structure of amino acids differs due to the $R$ group.

Which of the following amino acids is not optically active?

What does the part labeled '$X$' represent in the structural formula shown below?

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