Q116: Relative to skin protein,hair protein has more
A)amino
Q117: Hair is composed of
A)carbohydrate.
B)protein.
C)fat.
D)nucleic acid.
Q118: In adult shampoos,the detergent often contains
A)sodium bicarbonate.
B)sodium
Q119: People with blonde hair have _ pigment(s)in
Q120: People with red hair have lots of
A)melanin.
B)phaeomelanin.
C)chlorophyll.
D)none
Q122: The two main types of laundry bleaches
Q123: Petroleum solvents are safe to use with
Q124: Surfactants that carry a negative charge are
Q125: A disadvantage of LAS detergents is that
Q126: The color of human hair depends partly
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