2006-12-26 05:18:52 · 11 answers · asked by Rose 1 in Science & Mathematics ➔ Medicine
it's keratin...collagen is in the skin. Keratin continues to grow after you die, because it is only composed of dead cells much like the shells of the once living cells...some people can grow Keritinaceous horns on their foreheads...look up the "mutter museum" it will tell you all about weird human growth anomalies.. some are really cool but gross!
http://www.collphyphil.org/virt_tour/museum.htm
2006-12-26 05:28:28 · answer #1 · answered by Tanya N (thesingingbeaner) 3 · 0⤊ 0⤋
keratin is fibrous structural protein of hair, nails, horn, hoofs, wool, feathers, and of the epithelial cells in the outermost layers of the skin. The polypeptide chains of keratin are arranged in parallel sheets held together by hydrogen bonding.
Of the amino acids in keratin, cystine may account for as much as 24 percent. The numerous disulfide bonds formed by cystine are responsible…
2006-12-26 10:59:40 · answer #2 · answered by lovely_antionette 1 · 1⤊ 0⤋
Keratin, its what makes the nail hard to the touch.
2006-12-27 03:38:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
nails are hardened keratinous plate-like structures which grow as dead cells from the nail root,which lies below the skin at the base.
2006-12-28 19:35:37 · answer #4 · answered by rashmi l 1 · 0⤊ 0⤋
It is the keratin protein, the same we find in hair, hoof, and, claws.
2006-12-26 10:04:55 · answer #5 · answered by Ishan26 7 · 0⤊ 0⤋
calcium keratin and a whole mess of other stuff bud.
2006-12-26 05:27:01 · answer #6 · answered by ShuttleCock 2 · 0⤊ 0⤋
Hi. I always thought it was collagen. Oops, it is keratin : http://www.answers.com/finger%20nail
2006-12-26 05:21:46 · answer #7 · answered by Cirric 7 · 0⤊ 0⤋
keratin
2006-12-28 23:03:08 · answer #8 · answered by hermione 2 · 0⤊ 0⤋
keratin
2006-12-26 17:54:22 · answer #9 · answered by pavan 1 · 0⤊ 0⤋
It is "ALPHA KERATIN" and is a FIBROUS PROTEIN.
It is insoluble in water.
2006-12-28 20:13:56 · answer #10 · answered by dfla 2 · 0⤊ 0⤋