Cations (+ly charged)

• What is the purpose of Ca2+ ions?

  involved in muscle contraction and nerve impulse transmission
• What is the purpose of Na+ ions?

  Involved in co transport, reabsorption of water in the kidneys, and nerve impulse transmission
• What is the purpose of K+ ions?

  Involved in stomatal opening in plants, and nerve impulse transmission
• What is the purpose of H+ ions?

  Involved in chemiosmosis, pH determination and catylisation of reactions
• What is the purpose of Ammonium (NH4+) ions?

  Involved in the nitrogen cycle, where by bacteria convert ammonium ions into nitrate ions