11749574
Description
Quiz by Christina Marshall, updated more than 1 year ago
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Created by Christina Marshall
almost 7 years ago
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Question 1
Question
Molecules that are found in living cells and contain the element ___________ are considered organic molecules.
Answer
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hydrogen
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carbon
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oxygen
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nitrogen
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calcium
Question 2
Question
The versatility of carbon to serve as the backbone for a variety of different molecules is due to
Answer
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the ability of carbon atoms to form four covalent bonds
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the fact that carbon usually forms ionic bonds with many different atoms
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the abundance of carbon in the environment
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the ability of carbon to form covalent bonds with many different types of atoms
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both a and d
Question 3
Question
Which of the following type(s) of bonds are nonpolar?
Answer
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C--C
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C--O
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C--H
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both a and b
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both a and c
Question 4
Question
Which of the following molecules are isomers of each other?
Answer
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a and b
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a and c
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b and c
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a, b, and c
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None of them are isomers of each other
Question 5
Question
A polysaccharide that is commonly found in animals cells and stores energy is
Answer
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glucose
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sucrose
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glycogen
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starch
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cellulose
Question 6
Question
In contrast to other fatty acids, essential fatty acids
Answer
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are always saturated fats.
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cannot be synthesized by the organism and are necessary for survival.
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can act as building blocks for large, more complex macromolecules.
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are the simplest form of lipids found in plant cells.
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are structural components of plasma membranes
Question 7
Question
The structures of three molecules are shown below. Which of them is (are) amphipathic?
Answer
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a only
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b only
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c only
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b and c
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a and c
Question 8
Question
The monomers of proteins are ___________, and these are linked by polar covalent bonds commonly referred to as ______________.
Answer
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nucleotides, peptide bonds
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amino acids, ester bonds
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hydroxyl groups, ester bonds
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amino acids, peptide bonds
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monosaccharides, glycosidic linkages
Question 9
Question
A _______________ is a portion of protein with a particular structure and function.
Answer
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peptide bond
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domain
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phospholipid
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wax
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monosaccharide
Question 10
Question
A DNA molecule contains 30% G. What percentage of its bases are A?
Answer
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30%
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20%
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15%
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10%
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none of the above
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