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Java Games: Flashcards, matching, concentration, and word search. |
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Ch. 20 Chemical Texture Services: Understanding Basic Building Blocks of the Hair
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| Amino Acids | compounds made up of carbon, oxygen, hydrogen, nitrogen, and sulfur |
| Peptide Bonds | end bonds, chemical bonds that join amino acids together, end-to-end in long chains, to form a polypeptide chain |
| Polypeptide chains | long chains of amino acids joined together by peptide bonds |
| Keratin proteins | long, coiled polypeptide chains |
| Side bonds | disulfide, salt, and hydrogen bonds that cross-link polypeptide chains together |
| Disulfide bonds | strongest side bond |
| Salt bonds | weak and easily broken by changes in pH levels |
| Hydrogen bonds | weak,resulting from attraction between opposite electrical charges and easily broken by water, |
| Cuticle | tough exterior layer of the hair that protects the hair from damage |
| Cortex | middle layer of the hair that is responsible for strength and elasticity |
| Medulla | innermost layer of the hair, called the pith or core of the hair and does not play a role in chemical texture services. May be missing in fine hair |
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Cosmetology Instructor |
Center of Applied Technology North |
| Severn, MD |
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