Question 1

The sugar glucose has an important role

Accepted Answer

A)  in the formation of proteins. 
B)  in short-term energy storage. 
C)  in the formation of membranes. 
D)  as a building block of nucleotides. 
A)  in the formation of proteins. 
B)  in short-term energy storage. 
C)  in the formation of membranes. 
D)  as a building block of nucleotides.

Question 2

Which of the following levels of protein structure involves more than one polypeptide chain?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary

Question 3

An atom of the element with the atomic number of 11 (which can form an ion)always contains 11

Accepted Answer

A)  neutrons. 
B)  nuclei. 
C)  electrons. 
D)  protons. 
A)  neutrons. 
B)  nuclei. 
C)  electrons. 
D)  protons.

Question 4

In organic compounds,carbon atoms are bound to each other by

Accepted Answer

A)  ionic bonds. 
B)  polar bonds. 
C)  hydrogen bonds. 
D)  covalent bonds. 
A)  ionic bonds. 
B)  polar bonds. 
C)  hydrogen bonds. 
D)  covalent bonds.

Question 5

One of the symptoms of kidney disease is the presence of proteins in a patient's urine.To quickly test for kidney disease using a urine sample,a doctor might add a chemical that causes a color change when

Accepted Answer

A)  nitrogen is present, but not oxygen. 
B)  nitrogen is present, but not phosphorus. 
C)  only oxygen and hydrogen are present. 
D)  only carbon and hydrogen are present. 
A)  nitrogen is present, but not oxygen. 
B)  nitrogen is present, but not phosphorus. 
C)  only oxygen and hydrogen are present. 
D)  only carbon and hydrogen are present.

Question 6

When you place a piece of red meat on a hot barbeque,it slowly changes from soft to firm.Meat is primarily made of proteins.Which of the following might account for the change in texture during cooking?

Accepted Answer

A)  The heat causes the cells in the meat to produce more protein. 
B)  The heat causes chemical bonds to form between the proteins and nucleic acids in the meat. 
C)  The heat from the barbeque converts proteins into lipids. 
D)  The addition of heat causes proteins to denature and link together. 
A)  The heat causes the cells in the meat to produce more protein. 
B)  The heat causes chemical bonds to form between the proteins and nucleic acids in the meat. 
C)  The heat from the barbeque converts proteins into lipids. 
D)  The addition of heat causes proteins to denature and link together.

Question 7

The following figure shows the chemical structure and space-filling models for stearic acid and oleic acid.
   The reason oleic acid is slightly bent (as compared to stearic acid)is that it contains a ________ between two of its carbon atoms.

Accepted Answer

The answer of The following figure shows the chemical structure...

Question 8

Oxygen has six electrons in its outer shell that can hold up to eight electrons.As a result,oxygen will commonly form ________ covalent bonds.

Accepted Answer

The answer of Oxygen has six electrons in its outer...

Question 9

The number that represents neutrality on the pH scale is ________.

Accepted Answer

The answer of The number that represents neutrality on the...

Question 10

How many different elements would be needed to construct a molecule of C₈H₁₀N₄O₂?

Accepted Answer

A)  4 
B)  8 
C)  12 
D)  24 
A)  4 
B)  8 
C)  12 
D)  24

Question 11

Electrons are found

Accepted Answer

A)  in the nucleus of an atom. 
B)  only in complex molecules. 
C)  in one or more shells that surround the atom's nucleus. 
D)  in both the nucleus and inner shell of an atom. 
A)  in the nucleus of an atom. 
B)  only in complex molecules. 
C)  in one or more shells that surround the atom's nucleus. 
D)  in both the nucleus and inner shell of an atom.

Question 12

A solution with a pH of ________ is ________ times more acidic than a solution with a pH of ________.

Accepted Answer

A)  3; 10,000; 7 
B)  12; 100; 10 
C)  7; 1,000; 9 
D)  4; 10; 3 
A)  3; 10,000; 7 
B)  12; 100; 10 
C)  7; 1,000; 9 
D)  4; 10; 3

Question 13

Chemists often represent the structure of atoms using p,n,and e to indicate the numbers of protons,neutrons,and electrons; which atom would have an atomic mass number of 30?

Accepted Answer

A)  10 p, 10 n, 10 e 
B)  15 p, 15 n, 15 e 
C)  15 p, 0 n, 15 e 
D)  0 p, 15 n, 15 e 
A)  10 p, 10 n, 10 e 
B)  15 p, 15 n, 15 e 
C)  15 p, 0 n, 15 e 
D)  0 p, 15 n, 15 e

The sugar glucose has an important role

Which of the following levels of protein structure involves more than one polypeptide chain?

An atom of the element with the atomic number of 11 (which can form an ion)always contains 11

In organic compounds,carbon atoms are bound to each other by

One of the symptoms of kidney disease is the presence of proteins in a patient's urine.To quickly test for kidney disease using a urine sample,a doctor might add a chemical that causes a color change when

When you place a piece of red meat on a hot barbeque,it slowly changes from soft to firm.Meat is primarily made of proteins.Which of the following might account for the change in texture during cooking?

The following figure shows the chemical structure and space-filling models for stearic acid and oleic acid. The reason oleic acid is slightly bent (as compared to stearic acid)is that it contains a ________ between two of its carbon atoms.

Oxygen has six electrons in its outer shell that can hold up to eight electrons.As a result,oxygen will commonly form ________ covalent bonds.

The number that represents neutrality on the pH scale is ________.

How many different elements would be needed to construct a molecule of C₈H₁₀N₄O₂?

Electrons are found

A solution with a pH of is times more acidic than a solution with a pH of .

Chemists often represent the structure of atoms using p,n,and e to indicate the numbers of protons,neutrons,and electrons; which atom would have an atomic mass number of 30?

The Nature of Science and the Characteristics of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photo Synthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Filters

Exam 2: The Chemistry of Life

The sugar glucose has an important role

Which of the following levels of protein structure involves more than one polypeptide chain?

An atom of the element with the atomic number of 11 (which can form an ion)always contains 11

In organic compounds,carbon atoms are bound to each other by

One of the symptoms of kidney disease is the presence of proteins in a patient's urine.To quickly test for kidney disease using a urine sample,a doctor might add a chemical that causes a color change when

When you place a piece of red meat on a hot barbeque,it slowly changes from soft to firm.Meat is primarily made of proteins.Which of the following might account for the change in texture during cooking?

The following figure shows the chemical structure and space-filling models for stearic acid and oleic acid. The reason oleic acid is slightly bent (as compared to stearic acid)is that it contains a ________ between two of its carbon atoms.

Oxygen has six electrons in its outer shell that can hold up to eight electrons.As a result,oxygen will commonly form ________ covalent bonds.

The number that represents neutrality on the pH scale is ________.

How many different elements would be needed to construct a molecule of C₈H₁₀N₄O₂?

Electrons are found

A solution with a pH of ________ is ________ times more acidic than a solution with a pH of ________.

Chemists often represent the structure of atoms using p,n,and e to indicate the numbers of protons,neutrons,and electrons; which atom would have an atomic mass number of 30?

The Nature of Science and the Characteristics of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photo Synthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Filters

A solution with a pH of is times more acidic than a solution with a pH of .