Page 1
Prepared by Frank J. Torrano, American River College
© 2013 Pearson Education, Inc.
Chapter 2: The Chemical Level of Organization
Atomic Structure/ Molecules/
Physiochemical Reactions
Enzymes/Organic and
Inorganic Compounds/
Water
pH/Inorganic Compound Roles/
Carbohydrates
Nucleic Acids/ High-Energy
Compounds/CellsLipids/Proteins
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FINAL ROUND
Page 2
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Which of the following is an inorganic compound?
a. oxygen atom (O)
b. oxygen gas (O2)
c. water (H2O)
d. glucose (C6H12O6)
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Page 3
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Which of the following is an inorganic compound?
a. oxygen atom (O)
b. oxygen gas (O2)
c. water (H2O)
d. glucose (C6H12O6)
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Page 4
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Which type of bonds attracts water molecules to each other, causing surface tension and slowing the rate of evaporation?
a. hydrogen bonds
b. covalent bonds
c. peptide bonds
d. ionic bonds
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Page 5
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Which type of bonds attracts water molecules to each other, causing surface tension and slowing the rate of evaporation?
a. hydrogen bonds
b. covalent bonds
c. peptide bonds
d. ionic bonds
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Page 6
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Which of the following is a rule of chemical notation?
a. A superscript following the abbreviation of an element indicates more than one atom.
b. The number of atoms of each element must always be the same on both sides of the equation.
c. In a chemical reaction, the interacting participants are called products.
d. The abbreviation of a compound indicates one molecule of that compound.
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Page 7
© 2013 Pearson Education, Inc.
Which of the following is a rule of chemical notation?
a. A superscript following the abbreviation of an element indicates more than one atom.
b. The number of atoms of each element must always be the same on both sides of the equation.
c. In a chemical reaction, the interacting participants are called products.
d. The abbreviation of a compound indicates one molecule of that compound.
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Page 8
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Most of the structural components of the human body are made up of which type of bond?
a. nonpolar covalent
b. ionic
c. hydrogen
d. polar covalent
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Page 9
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Most of the structural components of the human body are made up of which type of bond?
a. nonpolar covalent
b. ionic
c. hydrogen
d. polar covalent
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Page 10
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Regardless of the element, the first electron shell of any atom of that element can hold a maximum of how many electrons?
a. one
b. two
c. four
d. eight
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Page 11
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Regardless of the element, the first electron shell of any atom of that element can hold a maximum of how many electrons?
a. one
b. two
c. four
d. eight
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Page 12
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Which of the following are important gases dissolved in body fluids?
a. nitrogen and oxygen
b. nitrogen and radon
c. carbon dioxide and oxygen
d. carbon dioxide and nitrogen
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Page 13
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Which of the following are important gases dissolved in body fluids?
a. nitrogen and oxygen
b. nitrogen and radon
c. carbon dioxide and oxygen
d. carbon dioxide and nitrogen
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Page 14
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Small molecules that generally do not contain carbon and hydrogen atoms are which of the following?
a. proteins
b. inorganic compounds
c. metabolites
d. organic compounds
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Page 15
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Small molecules that generally do not contain carbon and hydrogen atoms are which of the following?
a. proteins
b. inorganic compounds
c. metabolites
d. organic compounds
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Page 16
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Which of the following is true regarding water?
a. Water is an excellent solvent.
b. Water has a very low heat capacity.
c. Water is a poor solvent.
d. During hydrolysis of large molecules, water is released.
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Page 17
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Which of the following is true regarding water?
a. Water is an excellent solvent.
b. Water has a very low heat capacity.
c. Water is a poor solvent.
d. During hydrolysis of large molecules, water is released.
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Page 18
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Enzymes have what effect on the activation energy of a reaction?
a. They raise it.
b. They nullify it.
c. They lower it.
d. None of the answers is correct.
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Page 19
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Enzymes have what effect on the activation energy of a reaction?
a. They raise it.
b. They nullify it.
c. They lower it.
d. None of the answers is correct.
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Page 20
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Which of the following is true regarding enzymes?
a. They reverse the direction of reactions.
b. They increase the activation energy required for reactions to proceed.
c. They decrease the complexity of products formed in endergonic reactions.
d. They increase the rate of reactions.
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Page 21
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Which of the following is true regarding enzymes?
a. They reverse the direction of reactions.
b. They increase the activation energy required for reactions to proceed.
c. They decrease the complexity of products formed in endergonic reactions.
d. They increase the rate of reactions.
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Page 22
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Which of the following is a polysaccharide?
a. sucrose
b. glucose
c. glycogen
d. fructose
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Page 23
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Which of the following is a polysaccharide?
a. sucrose
b. glucose
c. glycogen
d. fructose
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Page 24
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The pH of human blood is
a. weakly acidic.
b. strongly acidic.
c. neutral.
d. weakly basic.
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Page 25
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The pH of human blood is
a. weakly acidic.
b. strongly acidic.
c. neutral.
d. weakly basic.
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Page 26
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The most abundant ions in body fluids are
a. K+ and Na+.
b. Cl– and H+.
c. H+ and Na+.
d. Na+ and Cl–.
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Page 27
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The most abundant ions in body fluids are
a. K+ and Na+.
b. Cl– and H+.
c. H+ and Na+.
d. Na+ and Cl–.
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Page 28
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A calcium ion (Ca2+) has a +2 charge. This indicates the calcium atom has
a. gained 2 protons.
b. lost 2 protons.
c. gained 2 electrons.
d. lost 2 electrons.
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Page 29
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A calcium ion (Ca2+) has a +2 charge. This indicates the calcium atom has
a. gained 2 protons.
b. lost 2 protons.
c. gained 2 electrons.
d. lost 2 electrons.
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Page 30
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Which pH value indicates a solution with a hydrogen ion concentration 1000 times higher than that of a pH 7 solution?
a. 1
b. 4
c. 10
d. 14
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Page 31
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Which pH value indicates a solution with a hydrogen ion concentration 1000 times higher than that of a pH 7 solution?
a. 1
b. 4
c. 10
d. 14
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Page 32
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Molecules in which of the following groups share a carbon-ring framework?
a. fatty acids
b. fats
c. steroids
d. phospholipids
Lipids/Proteins:
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Page 33
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Molecules in which of the following groups share a carbon-ring framework?
a. fatty acids
b. fats
c. steroids
d. phospholipids
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Page 34
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Denaturation is defined as a change in ________ of a protein.
a. three-dimensional shape
b. amino acid composition
c. amino acid sequence
d. a single amino acid
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Page 35
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Denaturation is defined as a change in ________ of a protein.
a. three-dimensional shape
b. amino acid composition
c. amino acid sequence
d. a single amino acid
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Page 36
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Cholesterol is a
a. phospholipid.
b. steroid.
c. fatty acid.
d. protein.
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Page 37
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Cholesterol is a
a. phospholipid.
b. steroid.
c. fatty acid.
d. protein.
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Page 38
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Variable R-groups, or side chains, are found in which of the following?
a. proteins
b. nucleic acids
c. lipids
d. carbohydrates
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Page 39
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Variable R-groups, or side chains, are found in which of the following?
a. proteins
b. nucleic acids
c. lipids
d. carbohydrates
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Page 40
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Proteins are formed via what process?
a. hydrolysis
b. hydration synthesis
c. dehydration synthesis
d. autolysis
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Page 41
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Proteins are formed via what process?
a. hydrolysis
b. hydration synthesis
c. dehydration synthesis
d. autolysis
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Page 42
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Which of the following are composed of amino acids?
a. nucleic acids
b. proteins
c. lipids
d. carbohydrates
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Page 43
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Which of the following are composed of amino acids?
a. nucleic acids
b. proteins
c. lipids
d. carbohydrates
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Page 44
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Which of the following is the most important high-energy compound in the body?
a. adenosine triphosphate
b. phosphoric acid
c. adenosine monophosphate
d. adenosine diphosphate
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Page 45
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Which of the following is the most important high-energy compound in the body?
a. adenosine triphosphate
b. phosphoric acid
c. adenosine monophosphate
d. adenosine diphosphate
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Page 46
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Thymine is found in which of the following?
a. deoxyribonucleic acid
b. ribonucleic acid
c. lauric acid
d. glycerol
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Page 47
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Thymine is found in which of the following?
a. deoxyribonucleic acid
b. ribonucleic acid
c. lauric acid
d. glycerol
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Page 48
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DNA consists of two nucleotide molecule chains held together by weak ________ bonds.
a. covalent
b. peptide
c. ionic
d. hydrogen
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Page 49
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DNA consists of two nucleotide molecule chains held together by weak ________ bonds.
a. covalent
b. peptide
c. ionic
d. hydrogen
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Page 50
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Which class of molecules directs the synthesis of enzymes?
a. proteins
b. carbohydrates
c. nucleic acids
d. lipids
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Page 51
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Which class of molecules directs the synthesis of enzymes?
a. proteins
b. carbohydrates
c. nucleic acids
d. lipids
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Page 52
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The breakdown of sucrose (table sugar) into simple sugars is an example of what function?
a. dehydration synthesis
b. peptide bond formation
c. hydrolysis
d. glycogenolysis
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Page 53
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The breakdown of sucrose (table sugar) into simple sugars is an example of what function?
a. dehydration synthesis
b. peptide bond formation
c. hydrolysis
d. glycogenolysis
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