Which chemical bonds, also known as end bonds, join amino acids together, end-to-end in long chains, to form a polypeptide chain?
Keratin proteins
Which item is included in the “Identification” section of the MSDS?
Restrictions on product use
The lifting of the nail plate from the bed without shedding is a sign of _____.
onycholysis
Non-oxidative haircolor is classified as temporary and _____ (traditional).
semipermanent
Reference points in a haircut are used to establish _____.
design lines
Which of the following are relaxers often marketed and sold as no mix–no lye relaxers?
Sodium hydroxide relaxer
Which action is an acceptable way to clean tools or instruments?
Using a cleaning solvent
The disorder in which the edges of the nail plate curl around to form a sharp cone at the free edge is called _____.
trumpet nail
Decolorizing the hair’s natural pigment allows the colorist to create the exact degree of _____.
contributing pigment
Achieving balance within a design can be accomplished by understanding the _____ and reference points.
Head shape
Relaxers that contain two components and must be mixed immediately prior to use are _____.
ammonium thioglycolate
Chemical germicides formulated for use on skin, and registered and regulated by the FDA are called _____.
antiseptics
Physical trauma or injury to the nail bed that damages the capillaries and allows small amounts of blood flow results in _____.
splinter hemorrhages
When applying color for a single-process retouch application, the color should be applied to the new growth using _____.
1/4-inch partings
The _____ is the highest point on the top of the head, and can be located easily by placing a comb on top of the head and noticing that the comb is resting on the highest point.
Apex
is a two-step process in which the hair first undergoes a physical change caused by wrapping the hair on perm rods, and then a chemical change caused by the application of permanent waving solution and neutralizer.
Chemical texture service
Standard Precautions that require the employer and employee to assume that all human blood and body fluids are potentially infectious are published by the _____.
CDC
Split or brittle nails with a series of lengthwise ridges and a rough appearance to the surface of the nail plate is known as _____.
onychorrhexis
The process of treating gray or very resistant hair to allow for better penetration of color is known as _____.
pre-softening
The two front corners represent the widest part of the _____.
bang area
What waving solutions use an ingredient other than ATG, such as cysteamine or mercaptamine, as the primary reducing agent?
Ammonia-free
Which substances work to break down stubborn films and remove the residue of pedicure products such as scrubs, salts, and masks?
Chelating soaps
A dark band within the nail plate extending from the base to the free edge due to increased pigmentation is known as _____.
melanonychia
Overlapping haircolor on previously tinted hair can cause breakage and create a visible line of _____.
demarcation
A(n) _____ is a thin, continuous mark, curved or straight, used as a guide while cutting hair.
Line