AP+Fingerprint+Questions

Fingerprint Multiple Choice: 4-4-08 11. Fingerprints are formed c. 10 weeks gestation 12. Fingerprints that are actual indentations left in some soft material such as clay are referred to as a. plastic fingerprints 13. The use of fingerprints in identification is not perfect because a. the current technology depends on humans to input and analyze the info, and humans make mistakes 14. The three main fingerprints are classified as c. loops, whorls, arches 15. A small triangular region is one characteristic found in a fingerprints is known as d. delta 16. Describe how to take a ridge count from a fingerprint - An imaginary line is drawn from the center of the core to the edge of the delta. The core is the center of the finger and the delta is where the there is a triangle near the bottom of the fingerprint.

17. Write a brief def. of he term fingerprint - A fingerprint is how you can tell people apart. There are ridges that are raised t help create the fingerprint as a whole. Fingerprints how us grip and touch objects.

18. Describe how fingerprints are formed - They are formed when the baby is in the womb. A layer of skin called the epidermis is when new skin cells are produced. This piece of skin grows so fast that the layers start to collapse and fold into different directions.

19. IS it possible to alter fingerprints? Defend your answer - No because the outer layer helps protect the inner layers. Since the layers are all so thick and there are so many of them, then they can not be altered.

20. What aspect of a fingerprint chemically reacts with each: a. Ninhydrin: reacts with amino acid which are the proteins found in sweat b. Cyanocrylate: reacts with amino acids c. Silver Nitrate: chloride from salt in perspiration d. Iodine Fuming: iodine combines with carbohydrates in latent print