Question 1

A simple sugar with the formula C5H10O5 can be classified as a

Accepted Answer

A)  hexose. 
B)  polysaccharide. 
C)  disaccharide. 
D)  pentose. 
E)  lipid. 
A)  hexose. 
B)  polysaccharide. 
C)  disaccharide. 
D)  pentose. 
E)  lipid. D

Question 2

During the formation of a polymer from monomers,a(n)_______ is formed.

Accepted Answer

A)  molecule of water 
B)  disulfide bridge 
C)  hydrophobic bond 
D)  hydrophilic bond 
E)  ionic bond 
A)  molecule of water 
B)  disulfide bridge 
C)  hydrophobic bond 
D)  hydrophilic bond 
E)  ionic bond A

Question 3

The monomers that make up polymeric carbohydrates like starch are called

Accepted Answer

A)  nucleotides. 
B)  trisaccharides. 
C)  monosaccharides. 
D)  nucleosides. 
E)  fatty acids. 
A)  nucleotides. 
B)  trisaccharides. 
C)  monosaccharides. 
D)  nucleosides. 
E)  fatty acids. C

Question 4

Which components of an atom do not add significantly to its mass?

Accepted Answer

A)  Proton 
B)  Neutron 
C)  Electron 
D)  Nucleus 
E)  Both a and b 
A)  Proton 
B)  Neutron 
C)  Electron 
D)  Nucleus 
E)  Both a and b

Question 5

Starch and glycogen,which are both polysaccharides,differ in their functions in that starch is _______,whereas glycogen _______.

Accepted Answer

A)  the main component for plant structural support;is an energy source for animals 
B)  a structural material found in plants and animals;forms external skeletons in animals 
C)  a temporary compound used to store glucose;is a highly stable compound that stores complex lipids 
D)  the principal energy storage compound of plants;is the main energy storage of animals 
E)  the main energy storage of animals;is a temporary compound used to store glucose 
A)  the main component for plant structural support;is an energy source for animals 
B)  a structural material found in plants and animals;forms external skeletons in animals 
C)  a temporary compound used to store glucose;is a highly stable compound that stores complex lipids 
D)  the principal energy storage compound of plants;is the main energy storage of animals 
E)  the main energy storage of animals;is a temporary compound used to store glucose

Question 6

If you place a paper towel in a dish of water,the water will move up the towel by capillary action because water

Accepted Answer

A)  molecules ionize. 
B)  is a good solvent. 
C)  molecules have hydrophobic interactions. 
D)  can form hydrogen bonds with the surface of the paper towel. 
E)  takes up large amounts of heat when it vaporizes. 
A)  molecules ionize. 
B)  is a good solvent. 
C)  molecules have hydrophobic interactions. 
D)  can form hydrogen bonds with the surface of the paper towel. 
E)  takes up large amounts of heat when it vaporizes.

Question 7

Phosphorus has an atomic number of 15 and an atomic mass of 31.How many neutrons does it have?

Accepted Answer

A)  5 
B)  16 
C)  30 
D)  31 
E)  47 
A)  5 
B)  16 
C)  30 
D)  31 
E)  47

Question 8

Ice is used to cool beverages primarily because

Accepted Answer

A)  it is composed only of water. 
B)  it floats. 
C)  it dilutes the taste. 
D)  people like to chew it. 
E)  it absorbs a lot of heat when it melts because of hydrogen bonding. 
A)  it is composed only of water. 
B)  it floats. 
C)  it dilutes the taste. 
D)  people like to chew it. 
E)  it absorbs a lot of heat when it melts because of hydrogen bonding.

Question 9

How many hydrogen atoms would bind with one nitrogen atom to create a neutrally charged molecule?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 10

Which statement about hydrogen bonds is true?

Accepted Answer

A)  They form between two hydrogen atoms. 
B)  They form only between hydrogen and oxygen atoms within a molecule. 
C)  They form between a highly electronegative atom and hydrogen. 
D)  They involve a transfer of electrons. 
E)  They are the strongest bonds because of their length. 
A)  They form between two hydrogen atoms. 
B)  They form only between hydrogen and oxygen atoms within a molecule. 
C)  They form between a highly electronegative atom and hydrogen. 
D)  They involve a transfer of electrons. 
E)  They are the strongest bonds because of their length.

Question 11

Two carbon atoms held together in a double covalent bond share _______ electron(s).

Accepted Answer

A)  one 
B)  two 
C)  four 
D)  six 
E)  eight 
A)  one 
B)  two 
C)  four 
D)  six 
E)  eight

Question 12

Magnesium (Mg)has an atomic number of 12.When it bonds with another element,it will likely

Accepted Answer

A)  gain two electrons from the other element. 
B)  share four electrons with the other element. 
C)  lose two electrons to the other element. 
D)  form a hydrogen bond. 
E)  gain six electrons from the other element. 
A)  gain two electrons from the other element. 
B)  share four electrons with the other element. 
C)  lose two electrons to the other element. 
D)  form a hydrogen bond. 
E)  gain six electrons from the other element.

Question 13

Chemical bonds formed by electrical attractions are

Accepted Answer

A)  covalent bonds. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  van der Waals forces. 
E)  Both b and c 
A)  covalent bonds. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  van der Waals forces. 
E)  Both b and c

Question 14

There are _______ natural elements in the universe.

Accepted Answer

A)  12 
B)  24 
C)  66 
D)  94 
E)  116 
A)  12 
B)  24 
C)  66 
D)  94 
E)  116

Question 15

Which element does not follow the octet rule?

Accepted Answer

A)  Sodium 
B)  Chlorine 
C)  Carbon 
D)  Hydrogen 
E)  Nitrogen 
A)  Sodium 
B)  Chlorine 
C)  Carbon 
D)  Hydrogen 
E)  Nitrogen

Question 16

A single covalent chemical bond represents the sharing of how many electrons?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
E)  Six 
A)  One 
B)  Two 
C)  Three 
D)  Four 
E)  Six

Question 17

Sucrose,known as common table sugar,is a

Accepted Answer

A)  hexose. 
B)  lipid. 
C)  simple sugar. 
D)  glucose. 
E)  disaccharide. 
A)  hexose. 
B)  lipid. 
C)  simple sugar. 
D)  glucose. 
E)  disaccharide.

Question 18

The element silicon (Si)has an atomic number of 14.Therefore,its properties are similar to those of

Accepted Answer

A)  sulfur. 
B)  oxygen. 
C)  phosphorus. 
D)  carbon. 
E)  boron. 
A)  sulfur. 
B)  oxygen. 
C)  phosphorus. 
D)  carbon. 
E)  boron.

Question 19

The element magnesium (Mg)has an atomic number of 12.Therefore,it has _______ electron shells and _______ electrons in the outermost shell.

Accepted Answer

A)  2;6 
B)  2;10 
C)  3;2 
D)  3;4 
E)  4;6 
A)  2;6 
B)  2;10 
C)  3;2 
D)  3;4 
E)  4;6

Question 20

Lipids form the barriers surrounding various compartments within an organism.Which property of lipids makes them a good barrier?

Accepted Answer

A)  Many biologically important molecules and ions are not soluble in lipids. 
B)  Lipids are polymers. 
C)  Lipids store energy. 
D)  Lipids are triglycerides. 
E)  Lipids release large amounts of energy when broken down. 
A)  Many biologically important molecules and ions are not soluble in lipids. 
B)  Lipids are polymers. 
C)  Lipids store energy. 
D)  Lipids are triglycerides. 
E)  Lipids release large amounts of energy when broken down.

Exam 2: The Chemistry and Energy of Life

A simple sugar with the formula C5H10O5 can be classified as a

During the formation of a polymer from monomers,a(n)_______ is formed.

The monomers that make up polymeric carbohydrates like starch are called

Which components of an atom do not add significantly to its mass?

Starch and glycogen,which are both polysaccharides,differ in their functions in that starch is _______,whereas glycogen _______.

If you place a paper towel in a dish of water,the water will move up the towel by capillary action because water

Phosphorus has an atomic number of 15 and an atomic mass of 31.How many neutrons does it have?

Ice is used to cool beverages primarily because

How many hydrogen atoms would bind with one nitrogen atom to create a neutrally charged molecule?

Which statement about hydrogen bonds is true?

Two carbon atoms held together in a double covalent bond share _______ electron(s).

Magnesium (Mg)has an atomic number of 12.When it bonds with another element,it will likely

Chemical bonds formed by electrical attractions are

There are _______ natural elements in the universe.

Which element does not follow the octet rule?

A single covalent chemical bond represents the sharing of how many electrons?

Sucrose,known as common table sugar,is a

The element silicon (Si)has an atomic number of 14.Therefore,its properties are similar to those of

The element magnesium (Mg)has an atomic number of 12.Therefore,it has _______ electron shells and _______ electrons in the outermost shell.

Lipids form the barriers surrounding various compartments within an organism.Which property of lipids makes them a good barrier?

Introduction

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

A simple sugar with the formula C₅H₁₀O₅ can be classified as a

Starch and glycogen,which are both polysaccharides,differ in their functions in that starch is _,whereas glycogen _.

The element magnesium (Mg)has an atomic number of 12.Therefore,it has _ electron shells and _ electrons in the outermost shell.