Properties of Hair and Services
The three different types of side bonds that link chains of amino acids together are _____.
a. oxygen, hydrogen, and salt
b. hydrogen, ionic, and carbon
c. ionic, helix, and disulfide
d. hydrogen, salt, and disulfide
d. hydrogen, salt, and disulfide
Hydroxide chemical relaxers break disulfide bonds and convert them to _____ bonds.
a. lanthionine
b. sulfur
c. carbon
d. hydrogen
a. lanthionine
What is the cross-section shape of curly hair?
a. Hexagonal
b. Round
c. Rectangular
d. Oval
d. Oval
What is the resting phase or final phase of the hair cycle that lasts until the fully grown hair is shed?
a. Telogen phase
b. Anagen phase
c. Catagen phase
d. Transition phase
a. Telogen phase
The condition of abnormal hair growth of terminal hair is referred to as _____.
a. monilethrix
b. ringed hair
c. hypertrichosis
d. trichoptilosis
c. hypertrichosis
A physical side bond that is easily broken by water and heat is a _____ bond.
a. nitrogen
b. hydrogen
c. disulfide
d. sulfur
b. hydrogen
All natural hair color is the result of pigment called _____.
a. melanin
b. tissue
c. sebum
d. proteins
a. melanin
Vellus hair is also known as _____ hair.
a. straight
b. melamine
c. lanugo
d. terminal
c. lanugo
The sudden falling out of hair in round patches or baldness in spots is known as _____.
a. postpartum alopecia
b. androgenic alopecia
c. alopecia totalis
d. alopecia areata
d. alopecia areata
Trichoptilosis is the technical term for _____.
a. split ends
b. hair loss
c. knotted hair
d. beaded hair
a. split ends
What type of bond is broken by wetting the hair with water and is reformed when the hair dries?
a. Salt bond
b. Hydrogen bond
c. Disulfide bond
d. Peptide bond
b. Hydrogen bond
The pigment that provides brown or black color to hair is _____.
a. ionic
b. eumelanin
c. pheomelanin
d. telogen
b. eumelanin
What type of hair is short, fine, unpigmented, and downy?
a. Vellus hair
b. Terminal hair
c. Androgenic hair
d. Feathered hair
a. Vellus hair
The complete loss of all body hair is known as _____.
a. alopecia universalis
b. alopecia totalis
c. alopecia areata
d. androgenic alopecia
a. alopecia universalis
What is a condition that is characterized by brittleness and the formation of nodular swellings along the hair shaft?
a. Fragilitas crinium
b. Trichorrhexis nodosa
c. Alopecia areata
d. Hypertrichosis
b. Trichorrhexis nodosa
A weak, physical, cross-link side bond between adjacent polypeptide chains that is broken by changes in pH is a _____ bond.
a. hydrogen
b. carbon
c. salt
d. sulfur
c. salt
What pigment in hair provides natural colors ranging from red and ginger to yellow and blond tones?
a. Eumelanin
b. Neuromelanin
c. Pheomelanin
d. Keratin
c. Pheomelanin
What are the three growth cycles of human hair?
a. Anagen, growth phase, and telogen
b. Catagen, return, and transition
c. Anagen, catagen, and telogen
d. Anagen, transition, and matur
c. Anagen, catagen, and telogen
Temporary hair loss experienced at the end of a pregnancy is called _____.
a. congenital alopecia
b. postpartum alopecia
c. involutional alopecia
d. androgenic alopecia
b. postpartum alopecia
What is the technical term for beaded hair?
a. Canities
b. Hyperkeratosis
c. Trichinosis
d. Monilethrix
d. Monilethrix
Permanent waving and hair relaxers change the shape of hair by chemically altering the hair’s _____.
a. hydrogen bonds
b. ionic bonds
c. disulfide bonds
d. amino acids
c. disulfide bonds
What term refers to the shape of the hair strand?
a. Whorl
b. Cowlick
c. Hair stream
d. Wave pattern
d. Wave pattern
What is the growth phase during which new hair is produced?
a. Genesis
b. Telogen
c. Anagen
d. Catagen
c. Anagen
What is the technical term for gray hair?
a. Alopecia
b. Canities
c. Albino
d. Ringed hair
b. Canities
What is the technical term for brittle hair?
a. Hypertrichosis
b. Pityriasis capitis simplex
c. Pruritis
d. Fragilitas crinium
d. Fragilitas crinium