phosphorus cycle
TRANSCRIPT
Phosphorus Cycle
http://en.wikipedia.org/wiki/Phosphorus
Phosphorus in the Animal Kingdom
• Required in every cell in the human body
• Most phosphorus is in the form of phosphate PO4
• 85% of the phosphorus in the body is in bone in the form of Calcium Phosphate
• Cell membranes have the phospholipid bi-layer
• DNA and RNA have phosphate as one of the three components of the nucleotide
http://www.biologycorner.com/resources/lipidbilayer.gif
http://publications.nigms.nih.gov/thenewgenetics/images/ch1_nucleotide.jpg
Remember• All living things are made up of cells (The Cell
Theory)• DNA is found in all cells as the genetic material• ATP has three phosphate groups and powers
cells• No phosphate? No DNA, no power.
http://leavingbio.net/ENERGY%20FOR%20LIFE_files/image002.gif
Phosphorus• Phosphorus is
unique in that it does not enter the atmosphere, whereas carbon, nitrogen and oxygen do cycle through the atmosphere in the gaseous state.
https://bioh.wikispaces.com/file/view/36-17-PhosphorusCycle-L.gif/31445793/36-17-PhosphorusCycle-L.gif
Phosphorus Cycle1) Phosphate is often mined
from sedimentary rock or collected from guano
2) It is added to crops as a fertilizer or added to animal feed as a supplement
3) Once in the producers, phosphate cycles through the food web although it never exists in the gaseous state
http://www.lesco.com/images/roots_flat.jpg http://www.lesco.com/images/roots_flat.jpg
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Reminder of the Carbon Cycle