Inorganic ions

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  • Inorganic ions
    • important for cellular processes like..
      • Muscle contraction
      • Nervous coordination
      • maintaining osmotic pressure in cells and blood
    • Macronutrients
      • needed in small concentrations
      • Iron ion (Fe ^2+)
        • constituent of HAEMOGLOBIN
          • transports Oxygen in red blood cells
        • Lack of iron for humans can lead to ANAEMIA
      • Magnesium ion (Mg ^2+)
        • an important constituent of chlorophyll - therefore is essential for photosynthesis
          • plants without magnesium can't MAKE CHLOROPHYLL
            • Leaves are yellow
              • a condition known as CHLOROSIS
          • Growth is often stunted from lack of glucose
        • Mammals need Mg for BONES
      • Phosphate ion (PO4 ^3-)
        • used to make NUCLEOTIDES  including ATP
        • Constituent of phospholipids found in biological membranes
      • Calcium (Ca ^2+)
        • like phosphate - an important structural component of BONES AND TEETH in mammals
          • component of plant CELL WALLS
            • providing strength
    • Micronutrients
      • needed in minute, trace concentrations
        • Copper
        • Zinc
    • Organic: Molecules that have a high proportion of Carbon atoms
    • Inorganic: a molecule or ion that has no more than one Carbon atom


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