2007-01-11 14:59:56 · 5 answers · asked by Josh G 1 in Science & Mathematics ➔ Chemistry
Most are either covalently bonded, as in proteins, sugars, lipids, nucleic acids, etc. or in ionic form, as in ion pumps in the brain, unbound hemes, and ionic channels in cells and the digestive tract. Most, if not all, ionic compounds that are dissociated in the stomach (strong HCl) and absorbed into the blood to be carried where they are needed.. The calcium in the bones is the only element, that I am aware of, that exists as an ionic compound, which exists as calcium phosphate and calcium hydroxylapatite.
2007-01-11 15:11:51 · answer #1 · answered by Ross P 3 · 0⤊ 0⤋
They aren't really "elements" but compounds.
2007-01-11 23:15:59 · answer #2 · answered by Isabela 5 · 0⤊ 0⤋
In covalently or ionically bonded compounds, and in water solution.
2007-01-11 23:02:48 · answer #3 · answered by steve_geo1 7 · 0⤊ 0⤋
Liquid! 80%, I think. Not sure, though.
2007-01-11 23:02:44 · answer #4 · answered by chrisatmudd 4 · 0⤊ 0⤋
H2O
2007-01-11 23:02:17 · answer #5 · answered by VirtualElvis 4 · 0⤊ 0⤋