Glencoe Biology

Section 4: The Building Blocks of Life

Self-Check Quizzes-English

1
Molecules made from units of identical compounds linked by covalent bonds are called ____.
A)polymers
B)nucleic acids
C)elements
D)atoms
2
What is the structure shown here?
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A)elements called carbohydrates
B)macromolecules called carbohydrates
C)compounds called proteins
D)compounds called nucleic acids
3
These molecules are formed by ____.
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A)amino acid
B)phosphorus
C)carbon
D)potassium
4
How many electrons does a carbon atom have in its outer energy level?
A)four
B)two
C)six
D)eight
5
What are saturated fats?
A)lipids with double bonds between carbon atoms
B)lipids with single bonds between carbon atoms
C)proteins with single bonds between carbon atoms
D)proteins with double bonds between carbon atoms
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