11749574
Descrição
Quiz por Christina Marshall, atualizado more than 1 year ago
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Criado por Christina Marshall
mais de 6 anos atrás
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Questão 1
Questão
Molecules that are found in living cells and contain the element ___________ are considered organic molecules.
Responda
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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
Questão 2
Questão
The versatility of carbon to serve as the backbone for a variety of different molecules is due to
Responda
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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
Questão 3
Questão
Which of the following type(s) of bonds are nonpolar?
Responda
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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
Questão 4
Questão
Which of the following molecules are isomers of each other?
Responda
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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
Questão 5
Questão
A polysaccharide that is commonly found in animals cells and stores energy is
Responda
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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
Questão 6
Questão
In contrast to other fatty acids, essential fatty acids
Responda
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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
Questão 7
Questão
The structures of three molecules are shown below. Which of them is (are) amphipathic?
Responda
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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
Questão 8
Questão
The monomers of proteins are ___________, and these are linked by polar covalent bonds commonly referred to as ______________.
Responda
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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
Questão 9
Questão
A _______________ is a portion of protein with a particular structure and function.
Responda
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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
Questão 10
Questão
A DNA molecule contains 30% G. What percentage of its bases are A?
Responda
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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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