Type Topic in here Hair 1 Hair 2

Type Topic in here!

Hair 1 Hair 2 Fiber 1 Fiber 2 Pollen 10 10 10 20 20 20 30 30 30 40 40 40 50 50 50

Question 1 - 10 • What are the two parts that hair consists of?

Answer 1 – 10 • Follicle and Shaft

Question 1 - 20 • What type of evidence is hair considered?

Answer 1 – 20 • Class evidence

Question 1 - 30 • Identify the cuticle pattern in the picture below

Answer 1 – 30 • Imbricate

Question 1 - 40 • Is the following hair characteristic human or animal? • Pigmentation is denser towards medulla

Answer 1 – 40 • Animal

Question 1 - 50 • On a piece of hair, evidence of toxins were found 10. 4 cm from the root. How long ago did this individual ingest the toxin?

Answer 1 – 50 • 8 months

Question 2 - 10 • What are the 3 layers that make-up a hair shaft? List them in order starting on the outside of the hair going to the farthest inside.

Answer 2 – 10 • Cuticle, cortex, medulla

Question 2 - 20 • What is the largest part of the hair shaft?

Answer 2 – 20 • Cortex

Question 2 - 30 • Identify the cuticle pattern in the picture below

Answer 2 – 30 • Coronal

Question 2 - 40 • List the 3 stages of hair development in order

Answer 2 – 40 • Anagen, Catagen, Telogen

Question 2 - 50 • A hair is found to have a diameter of 65 µm and a medulla diameter of 20 µm. What is the medullary index of this hair

Answer 2 – 50 • 0. 31

Question 3 - 10 • Wool, cashmere, and angora are all examples of what type of fiber?

Answer 3 – 10 • Animal

Question 3 - 20 • A fiber that are very resistant to damage from harsh chemicals and are insoluble in what are what type of fibers?

Answer 3 – 20 • Plant fibers

Question 3 - 30 • What are the two different fiber classifications?

Answer 3 – 30 • Natural and synthetic fibers

Question 3 - 40 • What do all synthetic polymer fibers have in common?

Answer 3 – 40 • Petroleum based

Question 3 - 50 • What are the two most common ways of testing fibers found at a crime scene?

Answer 3 – 50 • Microscope and destructive tests

Question 4 - 10 • Cotton, coir, and hemp are all examples of what type of fiber?

Answer 4 – 10 • Plant fibers

Question 4 - 20 • Fiberglass and asbestos are both examples of what type of fiber?

Answer 4 – 20 • Mineral Fiber

Question 4 - 30 • What do all regenerated fibers have in common?

Answer 4 – 30 • Derived from cellulose

Question 4 - 40 • Fibers can be twisted into what?

Answer 4 – 40 • Yarn

Question 4 - 50 • Monomers in large vats are joined together to create what?

Answer 4 – 50 • Polymers

Question 5 - 10 • Who pollinates plants that have fragrant or showy flowers?

Answer 5 – 10 • Animals

Question 5 - 20 • Gymnosperms and angiosperms are examples of what type of plants?

Answer 5 – 20 • Seed plants

Question 5 - 30 • What part of the pollen grain and spore has a complex and unique structure?

Answer 5 – 30 • The outer shell or exine

Question 5 - 40 • Define pollen fingerprint

Answer 5 – 40 • The number and type of pollen grains found in a geographic area at a particular time of year

Question 5 - 50 • The pollen grain is the reproductive structure of what?

Answer 5 – 50 • Male sex cells of seed plants