Question 1

How would the lack of a cofactor for an enzyme affect that enzyme's function?

Accepted Answer

A) The enzyme's function would not be altered. 
B) The enzyme would function more slowly. 
C) The enzyme would function more quickly. 
D) The enzyme would not be able to function. 
E) The enzyme would cease to function after reaching a maximum rate. 
A) The enzyme's function would not be altered. 
B) The enzyme would function more slowly. 
C) The enzyme would function more quickly. 
D) The enzyme would not be able to function. 
E) The enzyme would cease to function after reaching a maximum rate.

Question 2

A polysaccharide that is formed in liver and muscle cells to store glucose is

Accepted Answer

A) lactose. 
B) cellulose. 
C) glycogen. 
D) sucrose. 
E) fructose. 
A) lactose. 
B) cellulose. 
C) glycogen. 
D) sucrose. 
E) fructose.

Question 3

A fatty acid with no double bonds between carbon atoms is

Accepted Answer

A) unsaturated. 
B) polyunsaturated. 
C) dehydrated. 
D) saturated. 
E) denatured. 
A) unsaturated. 
B) polyunsaturated. 
C) dehydrated. 
D) saturated. 
E) denatured.

Question 4

Which of these lists contains only trace elements?

Accepted Answer

A) sulfur,chlorine,oxygen 
B) selenium,hydrogen,calcium 
C) boron,oxygen,carbon 
D) silicon,fluorine,tin 
E) cobalt,calcium,sodium 
A) sulfur,chlorine,oxygen 
B) selenium,hydrogen,calcium 
C) boron,oxygen,carbon 
D) silicon,fluorine,tin 
E) cobalt,calcium,sodium

Question 5

How does the DNA molecule control the appearance and function of a cell?

Accepted Answer

The DNA molecule controls the synthesis

Question 6

An excess of hydrogen ions in the body fluids can have fatal results because this can

Accepted Answer

A) break chemical bonds. 
B) change the shape of proteins,rendering them nonfunctional. 
C) disrupt tissue functions. 
D) change body fluid pH. 
E) All of the answers are correct. 
A) break chemical bonds. 
B) change the shape of proteins,rendering them nonfunctional. 
C) disrupt tissue functions. 
D) change body fluid pH. 
E) All of the answers are correct.

Question 7

Isotopes of an element differ in the number of

Accepted Answer

A) protons in the nucleus. 
B) electrons in the nucleus. 
C) neutrons in the nucleus. 
D) electron clouds. 
E) electrons in energy shells. 
A) protons in the nucleus. 
B) electrons in the nucleus. 
C) neutrons in the nucleus. 
D) electron clouds. 
E) electrons in energy shells.

Question 8

The atomic number represents the number of

Accepted Answer

A) electrons in an atom. 
B) protons in an atom. 
C) neutrons in an atom. 
D) protons and neutrons in an atom. 
E) chemical bonds the atom may form. 
A) electrons in an atom. 
B) protons in an atom. 
C) neutrons in an atom. 
D) protons and neutrons in an atom. 
E) chemical bonds the atom may form.

Question 9

Compounds that do not usually contain carbon and hydrogen atoms as the primary structural ingredients are called ________ molecules.

Accepted Answer

A) non-carbonic 
B) organic 
C) hydro-carbonic 
D) metabolic 
E) inorganic 
A) non-carbonic 
B) organic 
C) hydro-carbonic 
D) metabolic 
E) inorganic

Question 10

The monomers of protein are

Accepted Answer

A) glucose. 
B) fatty acids. 
C) amino acids. 
D) nucleotides. 
E) nitrogen base. 
A) glucose. 
B) fatty acids. 
C) amino acids. 
D) nucleotides. 
E) nitrogen base.

Question 11

In an aqueous solution,sodium ions would move toward

Accepted Answer

A) a negative terminal. 
B) a positive terminal. 
C) a pH terminal. 
D) an organic terminal. 
E) the bottom. 
A) a negative terminal. 
B) a positive terminal. 
C) a pH terminal. 
D) an organic terminal. 
E) the bottom.

Question 12

In living cells,complex metabolic reactions proceed in a series of steps called

Accepted Answer

A) maneuvers. 
B) degrees. 
C) pathways. 
D) increments. 
E) cascades. 
A) maneuvers. 
B) degrees. 
C) pathways. 
D) increments. 
E) cascades.

Question 13

The reaction N₂ + 3 H₂ → 2 NH₃ is an example of a(n)________ reaction.

Accepted Answer

A) exchange 
B) decomposition 
C) synthesis 
D) enzyme 
E) metabolic 
A) exchange 
B) decomposition 
C) synthesis 
D) enzyme 
E) metabolic

Question 14

Continuous breakdown and replacement of cellular molecules is termed

Accepted Answer

A) metabolism. 
B) metabolic turnover. 
C) anabolic turnover. 
D) catabolic turnover. 
E) organic chemistry. 
A) metabolism. 
B) metabolic turnover. 
C) anabolic turnover. 
D) catabolic turnover. 
E) organic chemistry.

Question 15

Which of the following has the highest concentration of hydroxide ions?

Accepted Answer

A) pH 1 
B) pH 14 
C) pH 7 
D) pH 10 
E) pH 2 
A) pH 1 
B) pH 14 
C) pH 7 
D) pH 10 
E) pH 2

Question 16

H₂O is an example of a(n)

Accepted Answer

A) ionic formula. 
B) glucose molecule. 
C) compound. 
D) ion. 
E) covalent formula. 
A) ionic formula. 
B) glucose molecule. 
C) compound. 
D) ion. 
E) covalent formula.

Question 17

Lipids

Accepted Answer

A) form essential structural components of cells. 
B) provide a significant energy reserve. 
C) help to maintain body temperature. 
D) cushion organs against shocks. 
E) All of the answers are correct. 
A) form essential structural components of cells. 
B) provide a significant energy reserve. 
C) help to maintain body temperature. 
D) cushion organs against shocks. 
E) All of the answers are correct.

Question 18

In hydrolysis reactions,compounds react with

Accepted Answer

A) hydrogen,causing decomposition. 
B) glucose,causing decomposition. 
C) water,causing decomposition. 
D) carbon,causing decomposition. 
E) water,causing synthesis. 
A) hydrogen,causing decomposition. 
B) glucose,causing decomposition. 
C) water,causing decomposition. 
D) carbon,causing decomposition. 
E) water,causing synthesis.

Question 19

The structure of RNA differs from DNA in that

Accepted Answer

A) the backbone of RNA contains ribose. 
B) RNA contains pyrimidines but not purines. 
C) RNA contains purines but not pyrimidines. 
D) DNA contains pyrimidines but not purines. 
E) DNA contains purines but not pyrimidines. 
A) the backbone of RNA contains ribose. 
B) RNA contains pyrimidines but not purines. 
C) RNA contains purines but not pyrimidines. 
D) DNA contains pyrimidines but not purines. 
E) DNA contains purines but not pyrimidines.

Question 20

The actual mass of an atom is known as its

Accepted Answer

A) chemical weight. 
B) atomic weight. 
C) atomic mass. 
D) chemical mass. 
E) chemical force. 
A) chemical weight. 
B) atomic weight. 
C) atomic mass. 
D) chemical mass. 
E) chemical force.

Exam 2: The Chemical Level of Organization

How would the lack of a cofactor for an enzyme affect that enzyme's function?

A polysaccharide that is formed in liver and muscle cells to store glucose is

A fatty acid with no double bonds between carbon atoms is

Which of these lists contains only trace elements?

How does the DNA molecule control the appearance and function of a cell?

An excess of hydrogen ions in the body fluids can have fatal results because this can

Isotopes of an element differ in the number of

The atomic number represents the number of

Compounds that do not usually contain carbon and hydrogen atoms as the primary structural ingredients are called ________ molecules.

The monomers of protein are

In an aqueous solution,sodium ions would move toward

In living cells,complex metabolic reactions proceed in a series of steps called

The reaction N₂ + 3 H₂ → 2 NH₃ is an example of a(n)________ reaction.

Continuous breakdown and replacement of cellular molecules is termed

Which of the following has the highest concentration of hydroxide ions?

H₂O is an example of a(n)

Lipids

In hydrolysis reactions,compounds react with

The structure of RNA differs from DNA in that

The actual mass of an atom is known as its

An Introduction to Anatomy and Physiology

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters