1) 1. ‎What polymer are plant fibers primarily composed of? a) Cellulose b) Keratin c) Protein d) Nylon 2) Give one example of a seed fiber and one example of a stem fiber. a) Wool (seed) and silk (stem) b) Nylon (seed) and polyester (stem) c) Cotton (seed) and flax (stem) d) Acyrlic (seed) and rayon (stem) 3) Why is asbestos (a mineral fiber) no longer commonly used? a) It poses serious health risks b) It is too expensive c) It melts too quickly d) It is too colorful 4) What is the difference between natural fibers and synthetic fibers in terms of durability and resistance? a) Natural fibers melt at lower temperatures b) Synthetic fibers never deteriorate c) Natural fibers are indestructible d) Synthetic fibers are stronger and resist microorganisms 5) What are warp and weft in textile weaving? a) Warp = diagonal threads; Weft = vertical threads b) Warp = lengthwise threads; Weft = crosswise threads c) Warp = twisted threads; Weft = knotted threads d) Warp = colored threads; Weft = white threads 6) What are fibers considered in forensic science? a) A type of fingerprint b) A blood pattern c) A form of trace evidence d) A DNA profile 7) Which of the following is an example of a plant fiber? a) Cotton b) Nylon c) Acrylic d) Polyester 8) What are synthetic fibers made from? a) Proteins from animal hair b) Glucose molecules c) Minerals from the ground d) Polymers created by joining monomers 9) Which fiber is obtained from coconuts and is relatively waterproof? a) Flax b) Coir fiber c) Nylon d) Wool 10) What is the difference between warp and weft in weaving? a) Warp = diagonal threads; Weft = vertical threads b) Warp = twisted threads; Weft = knotted threads c) Warp = lengthwise threads; Weft = crosswise threads d) Warp = colored threads; Weft = white threads 11) Who described nine distinct fingerprint patterns in 1823? a) Sir William Herschel b) Sir Edmund Henry c) Jan Evangelist Purkinje d) John Dillinger 12) What system created in 1896 became the basis of the “ten card”? a) AFIS b) NGI c) Henry Classification System d) RISC 13) At what stage of gestation do fingerprint ridge patterns begin to form? a) 1st week b) 10th week c) 20th week d) At birth 14) What are the three basic fingerprint ridge patterns? a) Loops, whorls, arches b) Circles, squares, triangles c) Spirals, zigzags, waves d) Lines, dots, dashes 15) What is the difference between patent, plastic, and latent fingerprints? a) Patent = invisible; Plastic = visible; Latent = permanent b) Patent = palm prints; Plastic = footprints; Latent = handwriting c) Patent = DNA; Plastic = blood; Latent = saliva d) Patent = visible; Plastic = impressions in soft material; Latent = invisible to naked eye 16) What is a ridge count? a) Number of suspects in a case b) Number of scars on a finger c) Number of ridges between the core and delta d) Number of fingerprints collected 17) What are minutiae in fingerprint analysis? a) Small ridge details used for identification b) Fingerprint powders c) Large visible loops d) DNA sequences 18) What FBI system replaced AFIS and includes palm prints, iris scans, and facial recognition? a) CODIS b) NCIC c) RISC d) NGI 19) Why must fingerprints be photographed in situ before lifting? a) To make them look clearer b) To preserve their original position and context c) To compare with DNA d) To avoid using powders 20) Why did John Dillinger’s attempt to alter his fingerprints with acid fail? a) He replaced them with fake prints b) Acid permanently erased his prints c) Fingerprints grow back if dermal layer is intact. d) He wore gloves forever

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