Question 1

A solution with a pH of 4 would have _____ hydrogen ions than a solution with a pH of 6.

Accepted Answer

A)  2 times more 
B)  2 times fewer 
C)  20 times more 
D)  20 times fewer 
E)  100 times more 
A)  2 times more 
B)  2 times fewer 
C)  20 times more 
D)  20 times fewer 
E)  100 times more

Question 2

Sucrose is an example of

Accepted Answer

A)  a monosaccharide. 
B)  a lipid. 
C)  a disaccharide. 
D)  an inorganic molecule. 
E)  a polysaccharide. 
A)  a monosaccharide. 
B)  a lipid. 
C)  a disaccharide. 
D)  an inorganic molecule. 
E)  a polysaccharide.

Question 3

___________ are a common fuel nutrient that has glycogen as a storage form.

Accepted Answer

A)  Carbohydrates 
B)  Lipids 
C)  Proteins 
D)  Nucleic acids 
A)  Carbohydrates 
B)  Lipids 
C)  Proteins 
D)  Nucleic acids

Question 4

Atoms that have gained or lost electrons are called

Accepted Answer

A)  ions. 
B)  covalents. 
C)  nonpolars. 
D)  molecules. 
E)  neutrons. 
A)  ions. 
B)  covalents. 
C)  nonpolars. 
D)  molecules. 
E)  neutrons.

Question 5

A(n) __________ is formed when one atom loses an electron and another atom accepts that electron.

Accepted Answer

A)  ion 
B)  ionic bond 
C)  hydrogen bond 
D)  covalent bond 
E)  atom 
A)  ion 
B)  ionic bond 
C)  hydrogen bond 
D)  covalent bond 
E)  atom

Question 6

The mass number of an element is:

Accepted Answer

A)  the number of neutrons in the atom. 
B)  the number of protons in the atom. 
C)  the sum of the number of protons plus the number of neutrons. 
D)  the sum of the number of protons plus the number of electrons. 
E)  the sum of the number of neutrons plus the number of electrons 
A)  the number of neutrons in the atom. 
B)  the number of protons in the atom. 
C)  the sum of the number of protons plus the number of neutrons. 
D)  the sum of the number of protons plus the number of electrons. 
E)  the sum of the number of neutrons plus the number of electrons

Question 7

__________ is formed by the reaction of an acid and a base.

Accepted Answer

A)  An acid 
B)  A base 
C)  A salt 
D)  A buffer 
A)  An acid 
B)  A base 
C)  A salt 
D)  A buffer

Question 8

A(n) __________ is formed when two atoms share electrons.

Accepted Answer

A)  ion 
B)  ionic bond 
C)  hydrogen bond 
D)  covalent bond 
E)  atom 
A)  ion 
B)  ionic bond 
C)  hydrogen bond 
D)  covalent bond 
E)  atom

Question 9

Which of the following processes represents a synthesis reaction?

Accepted Answer

A)  glycolysis 
B)  the creation of a protein from amino acids 
C)  glycogenolysis 
D)  All of these are synthesis reactions. 
A)  glycolysis 
B)  the creation of a protein from amino acids 
C)  glycogenolysis 
D)  All of these are synthesis reactions.

Question 10

If the products of a chemical reaction contain less potential energy than the reactants,

Accepted Answer

A)  energy has been stored in the molecular bonds of the product. 
B)  energy has been released by the breaking of molecular bonds. 
C)  the reaction will be reversible without additional energy input. 
D)  a synthesis reaction is likely to have occurred. 
E)  All of these choices are correct. 
A)  energy has been stored in the molecular bonds of the product. 
B)  energy has been released by the breaking of molecular bonds. 
C)  the reaction will be reversible without additional energy input. 
D)  a synthesis reaction is likely to have occurred. 
E)  All of these choices are correct.

Question 11

According to the law of conservation of energy, the total energy of the universe is:

Accepted Answer

A)  constant 
B)  increasing exponentially 
C)  decreasing exponentially 
D)  increasing linearly 
E)  decreasing linearly. 
A)  constant 
B)  increasing exponentially 
C)  decreasing exponentially 
D)  increasing linearly 
E)  decreasing linearly.

Question 12

Which of these statements concerning lipids is NOT true?

Accepted Answer

A)  The building blocks of fats (triglycerides) are fatty acids and glycerol. 
B)  A fatty acid that contains only single covalent bonds between the carbon atoms is called unsaturated. 
C)  Fats, phospholipids, and steroids are lipids. 
D)  Lipids are substances that dissolve in nonpolar solvents. 
A)  The building blocks of fats (triglycerides) are fatty acids and glycerol. 
B)  A fatty acid that contains only single covalent bonds between the carbon atoms is called unsaturated. 
C)  Fats, phospholipids, and steroids are lipids. 
D)  Lipids are substances that dissolve in nonpolar solvents.

Question 13

Substances that donate hydrogen ions (protons) to a solution are called

Accepted Answer

A)  acids. 
B)  bases. 
C)  alkaline. 
D)  salts. 
A)  acids. 
B)  bases. 
C)  alkaline. 
D)  salts.

Question 14

The chemical notation for Magnesium ions is Mg+2. The designation 2+ indicates that:

Accepted Answer

A)  two electrons have been lost 
B)  two protons have been gained 
C)  the ion is negatively charged 
D)  the atomic number is two 
E)  the number of electrons equals the number of protons. 
A)  two electrons have been lost 
B)  two protons have been gained 
C)  the ion is negatively charged 
D)  the atomic number is two 
E)  the number of electrons equals the number of protons.

Question 15

Atom Y has 11 protons, 11 electrons, and 12 neutrons. What is the mass number of Atom Y?

Accepted Answer

A)  11 
B)  12 
C)  22 
D)  23 
E)  24 
A)  11 
B)  12 
C)  22 
D)  23 
E)  24

Question 16

Which of these is an organic molecule?

Accepted Answer

A)  H2O 
B)  H2CO3 
C)  CO2 
D)  NaCl 
E)  CaCl2 
A)  H2O 
B)  H2CO3 
C)  CO2 
D)  NaCl 
E)  CaCl2

Question 17

Chemicals that resist changes in pH when acids or bases are added to a solution are

Accepted Answer

A)  acids. 
B)  bases. 
C)  salts. 
D)  buffers. 
A)  acids. 
B)  bases. 
C)  salts. 
D)  buffers.

Question 18

The conversion between different states of energy (e.g. potential energy to kinetic energy):

Accepted Answer

A)  is not 100% efficent 
B)  is 100% efficent 
C)  typically generates heat 
D)  is not possible, energy can not change its state. 
E)  is not 100% efficent and typically generates heat 
A)  is not 100% efficent 
B)  is 100% efficent 
C)  typically generates heat 
D)  is not possible, energy can not change its state. 
E)  is not 100% efficent and typically generates heat

Question 19

Which of the following is considered a compound but not a molecule?

Accepted Answer

A)  water (H20). 
B)  sodium chloride (NaCl). 
C)  calcium (Ca2+) 
D)  glucose (C6H12O6) 
E)  all of these are compounds and molecules. 
A)  water (H20). 
B)  sodium chloride (NaCl). 
C)  calcium (Ca2+) 
D)  glucose (C6H12O6) 
E)  all of these are compounds and molecules.

Question 20

The building blocks for proteins are

Accepted Answer

A)  monosaccharides. 
B)  disaccharides. 
C)  glycerol + fatty acids. 
D)  nucleotides. 
E)  amino acids. 
A)  monosaccharides. 
B)  disaccharides. 
C)  glycerol + fatty acids. 
D)  nucleotides. 
E)  amino acids.

A solution with a pH of 4 would have _____ hydrogen ions than a solution with a pH of 6.

Sucrose is an example of

___________ are a common fuel nutrient that has glycogen as a storage form.

Atoms that have gained or lost electrons are called

A(n) __________ is formed when one atom loses an electron and another atom accepts that electron.

The mass number of an element is:

__________ is formed by the reaction of an acid and a base.

A(n) __________ is formed when two atoms share electrons.

Which of the following processes represents a synthesis reaction?

If the products of a chemical reaction contain less potential energy than the reactants,

According to the law of conservation of energy, the total energy of the universe is:

Which of these statements concerning lipids is NOT true?

Substances that donate hydrogen ions (protons) to a solution are called

The chemical notation for Magnesium ions is Mg⁺². The designation 2+ indicates that:

Atom Y has 11 protons, 11 electrons, and 12 neutrons. What is the mass number of Atom Y?

Which of these is an organic molecule?

Chemicals that resist changes in pH when acids or bases are added to a solution are

The conversion between different states of energy (e.g. potential energy to kinetic energy):

Which of the following is considered a compound but not a molecule?

The building blocks for proteins are

The Human Organism

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

Filters

Exam 2: The Chemical Basis of Life

A solution with a pH of 4 would have _____ hydrogen ions than a solution with a pH of 6.

Sucrose is an example of

___________ are a common fuel nutrient that has glycogen as a storage form.

Atoms that have gained or lost electrons are called

A(n) __________ is formed when one atom loses an electron and another atom accepts that electron.

The mass number of an element is:

__________ is formed by the reaction of an acid and a base.

A(n) __________ is formed when two atoms share electrons.

Which of the following processes represents a synthesis reaction?

If the products of a chemical reaction contain less potential energy than the reactants,

According to the law of conservation of energy, the total energy of the universe is:

Which of these statements concerning lipids is NOT true?

Substances that donate hydrogen ions (protons) to a solution are called

The chemical notation for Magnesium ions is Mg+2. The designation 2+ indicates that:

Atom Y has 11 protons, 11 electrons, and 12 neutrons. What is the mass number of Atom Y?

Which of these is an organic molecule?

Chemicals that resist changes in pH when acids or bases are added to a solution are

The conversion between different states of energy (e.g. potential energy to kinetic energy):

Which of the following is considered a compound but not a molecule?

The building blocks for proteins are

The Human Organism

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

Filters

The chemical notation for Magnesium ions is Mg⁺². The designation 2+ indicates that: