The Organic Molecules of Life Ch.3 – Flashcards
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Which of the following is an organic molecule
a. CO2 b.H2O
c. C6H12O6 d.o2
e. More than one of these are correct
answer
C6H12O6
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Carbon chains can vary in
a. Length b. Number of double bonds
c. Branching pattern
d. All of these
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All of these
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Organic molecules containing carboxyl groups are
a. nonpolar b. acidic
c. basic d. more than one of these are correct
answer
acidic
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Which of the following determines the chemical reactivity of biological molecules
a. isomers b. functional groups
c. number of carbon
d. length of hydrocarbon chain
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functional groups
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An amino acid is a protein as a _____ is to nucleic acid
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nucleotide
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Biological macromolecules are polymers that are found when ___ are joined by a ______ reaction
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monomers,dehydration synthesis
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Which of the following is monosaccharide
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glucose
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Carbohydrate
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cellulose,the major component of plant cell walls
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Protein
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keratin, found in hair,fingernails,horns, and feathers
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Nucleic acid
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composed of nucletides
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Lipid
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steroids such as cholesterol and sex hormones
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A triglyceride contains
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Glycerol and three fatty acids
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Sometimes undergoes complementary base pairing
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a fatty acid and three sugars
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May contain pleated sheets and helices
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protein and three fatty acids
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May be a ring of six carbon atoms attached to hydroxyl group
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glycerol and three fatty acids
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insoluble in water due to hydrocarbon chains
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glycerol and two fatty acids
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Variations in three-dimensional shapes among proteins are due to bonding between the
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R groups
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The polysaccharide found in plant cell walls is
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cellulose
