Fingerprint+Chapter+Multiple+choice+LT

11. c 12. a 13. a 14. c 15. d 16. To take a ridge count, you draw a line from the core of the print to the delta (triangular region near the outside). Then count the number of ridges on the fingerprint. 17. an impression left on any surface that consists of patterns made by the ridges on a finger. 18. Fingerprints are raised parts of the skin called ridges. When a baby is still in the womb, the skin on the fingers grows faster than the other skin, which causes the skin the make the fingerprint on everyones finger. 19. There has not been a method discovered to permanently alter fingerprints however people have been able to temporarily get rid or alter fingerprints such as the pineapple farm workers in Cuba who are exposed to chemicals and acids in pineapples that alter or get rid of them temporarily. The fingerprints grow back once they are no longer exposed to the chemicals and acids. 20. a) Reacts with amino acids (proteins) found in sweat. b) reacts with the Amino Acids c) Chloride from salt in perspiration on the print combines with silver nitrate to form silver chloride.