Question 1

Which one of the following characteristics applies to both living organisms and nonliving things?

Accepted Answer

A)  composed of matter 
B)  capable of reproduction 
C)  capable of storing energy for later use 
D)  capable of growth 
E)  composed of cells 
A)  composed of matter 
B)  capable of reproduction 
C)  capable of storing energy for later use 
D)  capable of growth 
E)  composed of cells

Question 2

Living organisms covalently link smaller molecules to synthesize large organic molecules called ________.

Accepted Answer

The answer of Living organisms covalently link smaller molecules to...

Question 3

Match each of the following descriptions to the appropriate term. Each term may be used only once.
-steroids, triglycerides

Accepted Answer

A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements 
A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements

Question 4

Describe how denaturing a protein alters the function of that protein.

Accepted Answer

Denaturing a protein permanently disrupt

Question 5

One of the most important buffer pairs in blood is carbonic acid and bicarbonate because they regulate the pH of blood by absorbing and releasing hydrogen ions as needed.

Accepted Answer

A) True 
 B)False

Question 6

Match each of the following descriptions to the appropriate term. Each term may be used only once.
-part of an atom that may participate in bonding with another atom

Accepted Answer

A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements 
A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements

Question 7

Match each of the following descriptions to the appropriate term. Each term may be used only once.
-the smallest unit of matter that can take part in a chemical reaction

Accepted Answer

A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements 
A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements

Question 8

Carbohydrates have which one of the following characteristics?

Accepted Answer

A)  They are composed of carbon, hydrogen, nitrogen, and oxygen. 
B)  They release energy when their peptide bonds are broken. 
C)  They are indigestible by most organisms. 
D)  They contain carbon, hydrogen, and oxygen in a ratio of 1-2-1. 
E)  They are able to store and transmit genetic information. 
A)  They are composed of carbon, hydrogen, nitrogen, and oxygen. 
B)  They release energy when their peptide bonds are broken. 
C)  They are indigestible by most organisms. 
D)  They contain carbon, hydrogen, and oxygen in a ratio of 1-2-1. 
E)  They are able to store and transmit genetic information.

Question 9

Each amino acid is composed of a central carbon that forms covalent bonds with four other atoms/molecules. These atoms/molecules include each of the following EXCEPT which one?

Accepted Answer

A)  an R group 
B)  an A group 
C)  an amino group 
D)  a hydrogen atom 
E)  a carboxyl group 
A)  an R group 
B)  an A group 
C)  an amino group 
D)  a hydrogen atom 
E)  a carboxyl group

Question 10

The molecule that stores the set of instructions of a cell and directs everything a cell does is ________.

Accepted Answer

The answer of The molecule that stores the set of...

Question 11

Isotopes of an element have the same ________, but different ________.

Accepted Answer

A)  number of electron shells; numbers of protons 
B)  atomic number; atomic masses 
C)  number of neutrons; numbers of protons 
D)  atomic mass; atomic numbers 
E)  name; chemical symbols 
A)  number of electron shells; numbers of protons 
B)  atomic number; atomic masses 
C)  number of neutrons; numbers of protons 
D)  atomic mass; atomic numbers 
E)  name; chemical symbols

Question 12

Explain how water in the human body helps to regulate body temperature following a long-distance bike ride.

Accepted Answer

Water in body fluids is able to absorb h

Question 13

The most important physical characteristic of lipids with regard to living organisms is that they

Accepted Answer

A)  are hydrophobic. 
B)  are very large and therefore difficult to store. 
C)  dissolve easily in water. 
D)  are typically a form of waste product that is difficult to eliminate. 
E)  are denser than water. 
A)  are hydrophobic. 
B)  are very large and therefore difficult to store. 
C)  dissolve easily in water. 
D)  are typically a form of waste product that is difficult to eliminate. 
E)  are denser than water.

Question 14

The outermost electron ________ of an atom can interact with other atoms to form a molecule.

Accepted Answer

The answer of The outermost electron ________ of an atom...

Question 15

Match each of the following descriptions to the appropriate term. Each term may be used only once.
-water, sodium chloride, carbon dioxide

Accepted Answer

A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements 
A) proton 
B) nucleic acids 
C) carbohydrates 
D) lipids 
E) isotopes
F)electrons
G)amino acids
H)atom
I)chemical bonds
J)matter
K)molecules
L)elements

Question 16

Which one of the following is a very important source of energy for nearly all cells?

Accepted Answer

A)  cellulose 
B)  deoxyribose 
C)  starch 
D)  glucose 
E)  ribose 
A)  cellulose 
B)  deoxyribose 
C)  starch 
D)  glucose 
E)  ribose

Question 17

Which one of the following is TRUE regarding water?

Accepted Answer

A)  Each molecule of water consists of two atoms of hydrogen and one atom of oxygen covalently bonded to each other. 
B)  The oxygen side of the water molecule is partially positive. 
C)  Water is a type of ion. 
D)  Electrons are shared equally between the atoms of water. 
E)  Water molecules are attracted to each other by ionic bonds. 
A)  Each molecule of water consists of two atoms of hydrogen and one atom of oxygen covalently bonded to each other. 
B)  The oxygen side of the water molecule is partially positive. 
C)  Water is a type of ion. 
D)  Electrons are shared equally between the atoms of water. 
E)  Water molecules are attracted to each other by ionic bonds.

Question 18

Which one of the following statements CORRECTLY describes the relationship between an atom and an element?

Accepted Answer

A)  An element is the fundamental unit of an atom. 
B)  An element is composed of atoms that are joined together by ionic and covalent bonds. 
C)  An atom is composed of different elements that are joined together by ionic and covalent bonds. 
D)  An atom is the smallest unit of an element that demonstrates all of the properties of that element. 
A)  An element is the fundamental unit of an atom. 
B)  An element is composed of atoms that are joined together by ionic and covalent bonds. 
C)  An atom is composed of different elements that are joined together by ionic and covalent bonds. 
D)  An atom is the smallest unit of an element that demonstrates all of the properties of that element.

Question 19

A polypeptide is generally referred to as a(n) ________ if it has more than 100 amino acids and has folded into a complex structure with a specific function.

Accepted Answer

The answer of A polypeptide is generally referred to as...

Question 20

Which one of the following occurs when a phosphate is removed from an ATP molecule?

Accepted Answer

A)  Energy is added to the ATP molecule to form ADP. 
B)  Oxygen produced in the reaction causes the molecule to explode. 
C)  Energy is released for cell work. 
D)  Chemical reactions stop in a cell due to lack of an energy source. 
E)  Fat is converted to protein. 
A)  Energy is added to the ATP molecule to form ADP. 
B)  Oxygen produced in the reaction causes the molecule to explode. 
C)  Energy is released for cell work. 
D)  Chemical reactions stop in a cell due to lack of an energy source. 
E)  Fat is converted to protein.

Exam 2: The Chemistry of Living Things

Which one of the following characteristics applies to both living organisms and nonliving things?

Living organisms covalently link smaller molecules to synthesize large organic molecules called ________.

Match each of the following descriptions to the appropriate term. Each term may be used only once. -steroids, triglycerides

Describe how denaturing a protein alters the function of that protein.

One of the most important buffer pairs in blood is carbonic acid and bicarbonate because they regulate the pH of blood by absorbing and releasing hydrogen ions as needed.

Match each of the following descriptions to the appropriate term. Each term may be used only once. -part of an atom that may participate in bonding with another atom

Match each of the following descriptions to the appropriate term. Each term may be used only once. -the smallest unit of matter that can take part in a chemical reaction

Carbohydrates have which one of the following characteristics?

Each amino acid is composed of a central carbon that forms covalent bonds with four other atoms/molecules. These atoms/molecules include each of the following EXCEPT which one?

The molecule that stores the set of instructions of a cell and directs everything a cell does is ________.

Isotopes of an element have the same ________, but different ________.

Explain how water in the human body helps to regulate body temperature following a long-distance bike ride.

The most important physical characteristic of lipids with regard to living organisms is that they

The outermost electron ________ of an atom can interact with other atoms to form a molecule.

Match each of the following descriptions to the appropriate term. Each term may be used only once. -water, sodium chloride, carbon dioxide

Which one of the following is a very important source of energy for nearly all cells?

Which one of the following is TRUE regarding water?

Which one of the following statements CORRECTLY describes the relationship between an atom and an element?

A polypeptide is generally referred to as a(n) ________ if it has more than 100 amino acids and has folded into a complex structure with a specific function.

Which one of the following occurs when a phosphate is removed from an ATP molecule?

Human Biology, Science, and Society

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Immune System and Mechanisms of Defense

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Endocrine System

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Development and Aging

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

Filters

Isotopes of an element have the same , but different .