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2006-11-13 02:11:48 · 4 answers · asked by confused 3 in Science & Mathematics Chemistry

4 answers

Calcium
Calcium is one of the most important minerals for the growth, maintenance, and reproduction of the human body. Calcium is essential for the formation of and maintenance of healthy teeth and bones.

The bones incorporate calcium into their structure. Like other tissues in the body, bones are continually being reabsorbed and re-formed. Teeth incorporate calcium in their structure in a manner similar to bones.

Calcium has other functions in addition to maintaining healthy teeth and bones. Blood coagulation, transmission of nerve impulses, muscle contraction and relaxation, normal heartbeat, stimulation of hormone secretion, activation of enzyme reactions, as well as other functions all require small amounts of calcium.
Phosphorous
The main function of phosphorus is in the formation of bones and teeth. It plays an important role in the body's utilization of carbohydrates and fats and in the synthesis of protein for the growth, maintenance, and repair of cells and tissues. It is also crucial for the production of ATP, a molecule the body uses to store energy.

Phosphorus works with the B vitamins. It also assists in the contraction of muscles, in the functioning of kidneys, in maintaining the regularity of the heartbeat, and in nerve conduction.
Nitrogen
79% of the air around us is nitrogen . Living things need nitrogen to make proteins, but they cannot get it directly from the air because nitrogen gas is too stable to react inside an organism to make new compounds.

So nitrogen must be changed into a more reactive form to allow plants and animals to use it. Plants can take up and use nitrogen when it is in the form of nitrates or ammonium salts. Changing nitrogen into a more reactive substance is called nitrogen fixation.

Nitrogen fixation happens in three different ways:

The energy in a lightning bolt can split the di-atomic nitrogen molecule in the air allowing each nitrogen atom to react with oxygen to form nitrogen oxides. These oxides are washed to the ground by the rain where they form nitrates.


The Haber process is used by industry to produce ammonia from nitrogen. Ammonia is used to make fertiliser for farmers to feed their crops.


Nitrogen-fixing bacteria found in the soil and in the root nodules of leguminous plants fix nitrogen into a usable form.


Nitrogen compounds are returned to the soil by excretion and egestion from animals or when plants and animals die and decay. The nitrogen compounds returned in this way are changed back to nitrogen gas by denitrifying bacteria which live in the soil - thus completing the cycle.

2006-11-13 02:30:04 · answer #1 · answered by moghusai 4 · 0 0

Well, as ions, calcium and phosphorous help with muscles and neural transmissions. Calcium is also used in the bones, but, that is a bit obvious. Nitrogen is trickier. It actually helps in the blood stream to lower the amount of oxygen in the blood so that you don't get giddy and light headed. I don't know what that is called, though.

2006-11-13 02:16:18 · answer #2 · answered by yodeladyhoo 5 · 0 0

Calcium makes up your bones, nitrogen is used to make carriers for hydrogen during Electron Transport to create ATP (the universal energy molecule) which contains Phosphorus.

2006-11-13 02:15:50 · answer #3 · answered by Chem_lover_Chris 2 · 0 0

N is used as part of peptide bonds that are the basics of life. Ca keeps bones strong, and Phosphorus is used in various biological molecules including ATP the universal energy source

2006-11-13 04:08:19 · answer #4 · answered by shiara_blade 6 · 0 0

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