W 27 -Plant nutrients- where they go and where they come from

W 27 -Plant nutrients- where they go and where they come from

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11/9/2009 1 Fun Fact(s) of the day Element Atomic no. Percentage Role oxygen 8 65.0 cellular respiration, component of water carbon 6 18.5 basis of organic molecules hydrogen 1 9.5 component of water and most organic molecules, electron carrier nitrogen 7 3.3 component of all proteins and nucleic acids calcium 20 1.5 component of bones and teeth, triggers muscle contraction phosphorus 15 1.0 component of nucleic acids, important in energy transfer potassium 19 0.4 main positive ion inside cells, important in nerve function sulfur 16 0.3 component of most proteins sodium 11 0.2 main positive ion outside cells, important in nerve function chlorine 17 0.2 main negative ion outside cells magnesium 12 0.1 essential component of many energy-transferring enzymes iron 26 trace essential component of hemoglobin in the blood fluorine 9 trace ? zinc 30 trace component of many enzymes silicon 14 trace ? zirconium 40 trace ? The most common elements in you (by weight) From Wikipedia November 2009 Fun Fact(s) of the day Element Percent of Atoms Atoms Role Hydrogen 63 4.22 x 10 27 component of water and most organic molecules, electron carrier Oxygen 24 1.61 x 10 27 cellular respiration, component of water Carbon 12 8.03 x 10 26 basis of organic molecules Nitrogen 0.58 3.9 x 10 25 component of all proteins and nucleic acids Calcium 0.24 1.6 x 10 25 component of bones and teeth, triggers muscle contraction Phosphorus 0.14 9.6 x 10 24 component of nucleic acids, important in energy transfer Sulfur 0.038 2.6 x 10 24 component of most proteins Sodium 0.037 2.5 x 10 24 main positive ion inside cells, important in nerve function Potassium 0.033 2.2 x 10 24 main positive ion outside cells, important in nerve function Chlorine 0.024 1.6 x 10 24
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