Chemical Texture Services.

chemical bonds that join amino acids together to form polypeptide chains are ______ bonds.

• hydrogen
• nitrogen
• oxygen
• peptide

polypeptide chains are long chains of amino acids joined together by ______

• hydroxide bonds
• amino acids
• peptide bonds
• peptide adhesive

keratin proteins are made of long chains of _____ linked together end to end like beads

• amino acids
• peptide bonds
• cross links
• polypeptide acids

what type of bond forms when the sulfur atom in two adjacent protein chains are joined toghether?

• sodium
• hydrogen
• calcium
• disulfide

the action of alkaline permanent waving lotion is to soften and _____

• discolor the hair
• shrink the hair
• expand the hair
• condition the hair

the chemical action of ____ breaks the disulfide bonds through a chemical reaction called reduction

• ammonia
• hydrogen peroxide
• waving lotion
• neutralizer

____ hair with strong, resistant cuticle layer needs the additional swelling and penetration that is provided by a stronger and more highly alkaline waving solution.

• fine
• medium
• curly
• coarse

_____ hair with a damaged cuticle layer is easily penetrated and could be further damaged by a highly alkaline permanent waving solution

• porous
• medium
• nonporous
• coarse

the ability of the perm chosen should correspond to the resistance, strength and ____ of the cuticle layer

• texture
• size
• elasticity
• porosity

what is the main active ingredient or reducing agent in alkaline perms?

• glycerol momothioglycolate
• ammonium thioglycolate
• hydrogen peroxide
• sodium hydroxide