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17 Cards in this Set
- Front
- Back
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1) The ultimate source of energy for life on earth is__________.
A) The sun B) Geothermal heat C) Carbohydrates D) Fats E) Other organisms |
A) The Sun |
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2) Which of the following is not a common component ofbiomolecules?
A) Carbon B) Hydrogen C) Oxygen D) Nitrogen E) Chlorine |
E) Chlorine |
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3) Which of the following is the basic structural unit ofliving organisms?
A) Nucleus B) Cell membrane C) Tissue D) Cell E) Cytoskeleton |
D) Cell |
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4) Which of the following is not an organelle? A) MitochondriaB) ChloroplastC) NucleusD) Plasma membraneE) Golgi complex
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D) Plasma Membrane |
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5) Which of the following is not a role played bycarbohydrates in living cells? A) Energy sourceB) Structural supportC) Intercellular communicationD) Both A and B are correctE)All are roles played by carbohydrates in living cells
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E) All are roles played by carbohydrates in living cells |
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6) Metabolism is best defined as the _________. A) Reactions of living cellsB) Reactions that synthesize large molecules in living cellsC) Reactions that degrade molecules in living cellsD) Conversion of food molecules to energyE)Reactions that synthesize and degrade molecules in living cells
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E) Reactions that synthesize and degrade molecules in living cells |
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7) The average life span of a species is about ________years A) Onemillion B) TenmillionC) Fivehundred thousandD) FivemillionE) Onehundred thousand
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A) One million |
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8) Which of the following is not a waste product of livingorganisms A) Carbon dioxideB) WaterC) UreaD) AmmoniaE) Glycine
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E) Glycine |
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9) Biochemistry is defined as A) The study of life processesB) The study of the molecular basis of lifeC) The study of living organismsD) The study of organic compounds in living organismsE) The study ofliving compounds
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B) The Study of the molecular basis of life |
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10) One of the principal methods that organisms use toobtain energy from chemical bonds is by ___________. A) Substitution reactionsB) Dehydration reactionsC) Oxidation/reduction reactionsD) Hydration reactionsE) Addition reactions
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C) Oxidation/reduction reactions |
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11) The following is an example of which reaction class? CH3Br + HSCH2CH(NH2)COOH --> CH3SCH2CH(NH2)COOH + Br- + H+
A) SubstitutionB) EliminationC) AdditionD) IsomerizationE) Oxidation/Reduction |
A) Substitution |
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12) The following is an example of which reaction class HOOCCH=CHCOOH + H2O --> HOOCCH2CH(OH)COOH
A) SubstitutionB) EliminationC) AdditionD) IsomerizationE) Oxidation/Reduction |
C) Addition |
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13) The following isan example of which reaction class? CH3CH2OH --> CH3CHO + H2O A) SubstitutionB) EliminationC) AdditionD) IsomerizationE) Oxidation/Reduction
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E) Oxidation/reduction |
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14) Which of the following is not a component of nucleicacid? A) NucleotidesB) GlucoseC) Phosphate groupD) PurinesE) Pyrimidines0
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B) Glucose |
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15) The largest molecules in living organisms are _________. A) proteinsB) lipidsC) nucleic acidsD) carbohydratesE) steroids
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C) Nucleic Acids |
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16) All of the following classes of compounds are lipidsexcept _______. A) fatsB) sterolsC) fatty acidsD)phosphoglyceridesE) nucleotides
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E) Nucleotides |
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17) Which of the following classes of biomolecules are themost abundant in nature? A) LipidsB) Amino acidsC) CarbohydratesD) ProteinsE)Nucleotides
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C) Carbohydrates |
