WorksheetsCh.11 Properties of Hair & Scalp
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Hair is approximately _____ percent protein.
a)
30
b)
50
c)
70
d)
90
2.
The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as _____.
a)
COHNS elements
b)
dermal foundation
c)
amino acids
d)
keratins
3.
The units of structure that build protein and are joined together end to end like pop beads are _____.
a)
oxygenated cells
b)
primary acids
c)
amino acids
d)
lymph glands
4.
A long chain of amino acids linked by peptide bonds is called a _____ chain.
a)
amino-peptide
b)
polymer
c)
keratin
d)
polypeptide
5.
What substances are comprised of long, coiled, complex polypeptides made of amino acids?
a)
Proteins
b)
Carbohydrates
c)
Keratins
d)
Melanins
6.
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
7.
A physical side bond that is easily broken by water and heat is a _____ bond.
a)
nitrogen
b)
hydrogen
c)
disulfide
d)
sulfur
8.
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
9.
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
10.
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
100 %
