PRINCIPLES OF BIOMEDICAL SCIENCE
EXAM SCRIPT PREMIUM QUESTIONS AND
SOLUTIONS GRADED A+
●● What is hair composed of?
Answer: Hair is composed of a protein called keratin
●● What is keratin?
Answer: Keratin is the same protein that forms our nails and our outer
layer of skin.
●● What are the three layers of the hair shaft?
Answer: Hair shafts are composed of three layers: the cuticle, the cortex,
and the medulla.
●● What is the hair cuticle?
Answer: The hair cuticle is the outermost layer of the hair, and it
consists of flattened, scale-like cells which overlap one another.
●● What is the hair cortex?
Answer: The hair cortex is the intermediate layer of the hair. The cortex
is home to the pigment-containing granules responsible for hair color
,and contains many of the characteristics used in microscopic analysis of
hair.
●● What is the hair medulla?
Answer: The hair medulla is the innermost layer of the hair. The
diameter of the medulla is useful in the identification and comparison
process.
●● Fingerprints
Answer: No people, not even identical twins, share the same fingerprint
●● Arch Patterns
Answer: Arches slope upward and then down, like very narrow
mountains.
●● The plain arch
Answer: The plain arch is the simplest fingerprint pattern because it
starts on one side of the finger, cascades upward slightly, and then
cascades back down to the other side of the finger
●● The tented arch
Answer: The tented arch is similar to the plain arch except that the
ridges in the center of the tented arch converge and thrust upward,
creating the appearance of a pitched tent
, ●● Loop Patterns
Answer: Loops begin on one side of the finger, curve around or upward,
and exit the other side
●● What are the two types of loop patterns?
Answer: Radial Loops and Ulnar Loops
●● Radial loops
Answer: Radial loops slope towards the thumb
●● Ulnar loops
Answer: Ulnar loops slope towards the little finger
●● Whorl Patterns
Answer: Whorls form circular or spiral patterns
●● Minutiae
Answer: Minutiae are tiny fingerprint ridge details
●● 12 point match
Answer: When fingerprints show similarities with at least 12 minutiae
EXAM SCRIPT PREMIUM QUESTIONS AND
SOLUTIONS GRADED A+
●● What is hair composed of?
Answer: Hair is composed of a protein called keratin
●● What is keratin?
Answer: Keratin is the same protein that forms our nails and our outer
layer of skin.
●● What are the three layers of the hair shaft?
Answer: Hair shafts are composed of three layers: the cuticle, the cortex,
and the medulla.
●● What is the hair cuticle?
Answer: The hair cuticle is the outermost layer of the hair, and it
consists of flattened, scale-like cells which overlap one another.
●● What is the hair cortex?
Answer: The hair cortex is the intermediate layer of the hair. The cortex
is home to the pigment-containing granules responsible for hair color
,and contains many of the characteristics used in microscopic analysis of
hair.
●● What is the hair medulla?
Answer: The hair medulla is the innermost layer of the hair. The
diameter of the medulla is useful in the identification and comparison
process.
●● Fingerprints
Answer: No people, not even identical twins, share the same fingerprint
●● Arch Patterns
Answer: Arches slope upward and then down, like very narrow
mountains.
●● The plain arch
Answer: The plain arch is the simplest fingerprint pattern because it
starts on one side of the finger, cascades upward slightly, and then
cascades back down to the other side of the finger
●● The tented arch
Answer: The tented arch is similar to the plain arch except that the
ridges in the center of the tented arch converge and thrust upward,
creating the appearance of a pitched tent
, ●● Loop Patterns
Answer: Loops begin on one side of the finger, curve around or upward,
and exit the other side
●● What are the two types of loop patterns?
Answer: Radial Loops and Ulnar Loops
●● Radial loops
Answer: Radial loops slope towards the thumb
●● Ulnar loops
Answer: Ulnar loops slope towards the little finger
●● Whorl Patterns
Answer: Whorls form circular or spiral patterns
●● Minutiae
Answer: Minutiae are tiny fingerprint ridge details
●● 12 point match
Answer: When fingerprints show similarities with at least 12 minutiae
