Question 1

If the pH of a person's blood was 7.4,it would be described as:

Accepted Answer

A)  strongly acidic. 
B)  neutral. 
C)  slightly acidic. 
D)  slightly alkaline. 
A)  strongly acidic. 
B)  neutral. 
C)  slightly acidic. 
D)  slightly alkaline.

Question 2

The term glycoprotein,a combination of two words,tells you that the compound is made of _____ with _____ being the dominant component.

Accepted Answer

A)  a lipid and a protein; the lipid 
B)  carbohydrate and protein; carbohydrate 
C)  a lipid and a protein; the protein 
D)  carbohydrate and protein; protein 
A)  a lipid and a protein; the lipid 
B)  carbohydrate and protein; carbohydrate 
C)  a lipid and a protein; the protein 
D)  carbohydrate and protein; protein

Question 3

Proteins are composed of ____ commonly occurring amino acids.

Accepted Answer

A)  10 
B)  18 
C)  21 
D)  22 
A)  10 
B)  18 
C)  21 
D)  22

Question 4

Match each term to its corresponding descriptive phrase.
-releases a hydrogen ion into a solution,which lowers the pH

Accepted Answer

A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP 
A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP

Question 5

The carbon-containing molecules formed by living things are often called:

Accepted Answer

A)  buffers. 
B)  inorganic molecules. 
C)  organic molecules. 
D)  salts. 
A)  buffers. 
B)  inorganic molecules. 
C)  organic molecules. 
D)  salts.

Question 6

Match each term to its corresponding descriptive phrase.
-lipid found in sex hormones that is made up of four rings

Accepted Answer

A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP 
A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP

Question 7

The atomic number of carbon is 6.How many unpaired electrons are in its outer shell?

Accepted Answer

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

Question 8

Describe the Bohr model of the atom.

Accepted Answer

The Bohr model of the atom, proposed by

Question 9

Hydrogen can form only when the hydrogen atom is covalently bonded to:

Accepted Answer

A)  an oxygen atom. 
B)  a nitrogen atom. 
C)  a fluorine. 
D)  any of the above. 
A)  an oxygen atom. 
B)  a nitrogen atom. 
C)  a fluorine. 
D)  any of the above.

Question 10

Which of the following is not a subatomic particle?

Accepted Answer

A)  Proton 
B)  Electron 
C)  Radon 
D)  Neutron 
A)  Proton 
B)  Electron 
C)  Radon 
D)  Neutron

Question 11

The type of reaction in which substances are combined to form more complex substances is called a(n)_____ reaction

Accepted Answer

A)  reversible 
B)  exchange 
C)  synthesis 
D)  decomposition 
A)  reversible 
B)  exchange 
C)  synthesis 
D)  decomposition

Question 12

Which of the following is not true of both triglycerides and phospholipids?

Accepted Answer

A)  They both contain glycerol. 
B)  They both contain fatty acids. 
C)  They both contain a hydrophobic and hydrophilic end. 
D)  All of the above are true of both triglycerides and phospholipids. 
A)  They both contain glycerol. 
B)  They both contain fatty acids. 
C)  They both contain a hydrophobic and hydrophilic end. 
D)  All of the above are true of both triglycerides and phospholipids.

Question 13

A molecule that is polar:

Accepted Answer

A)  can form a hydrogen bond. 
B)  must be ionic. 
C)  has an unequal charge. 
D)  is both A and C. 
A)  can form a hydrogen bond. 
B)  must be ionic. 
C)  has an unequal charge. 
D)  is both A and C.

Question 14

Prostaglandins and steroids share which of the following characteristics?

Accepted Answer

A)  Both are found in the cell membrane. 
B)  Both have a ring structure in their molecule. 
C)  Both have a saturated fat in their structure. 
D)  None of the above are shared characteristics. 
A)  Both are found in the cell membrane. 
B)  Both have a ring structure in their molecule. 
C)  Both have a saturated fat in their structure. 
D)  None of the above are shared characteristics.

Question 15

Which level of protein structure refers to the number,kind,and sequence of amino acids?

Accepted Answer

A)  Primary 
B)  Secondary 
C)  Tertiary 
D)  Quaternary 
A)  Primary 
B)  Secondary 
C)  Tertiary 
D)  Quaternary

Question 16

Which of the following is not true of all isotopes of oxygen?

Accepted Answer

A)  They can all react with two hydrogen atoms to form water. 
B)  They have the same number of protons. 
C)  They have the same atomic mass. 
D)  All of the above are true of isotopes of oxygen. 
A)  They can all react with two hydrogen atoms to form water. 
B)  They have the same number of protons. 
C)  They have the same atomic mass. 
D)  All of the above are true of isotopes of oxygen.

Question 17

The amino group in an amino acid is:

Accepted Answer

A)  NH3+. 
B)  COO-. 
C)  symbolized by the letter R. 
D)  SO2. 
A)  NH3+. 
B)  COO-. 
C)  symbolized by the letter R. 
D)  SO2.

Question 18

Match each term to its corresponding descriptive phrase.
-starch or sugar

Accepted Answer

A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP 
A) Acid 
B) Base 
C) RNA 
D) DNA 
E) Carbohydrate
F)Fat
G)Steroid
H)Protein
I)Prostaglandins
J)ATP

Question 19

Peptide bonds join together molecules of:

Accepted Answer

A)  glycerol. 
B)  glucose. 
C)  amino acids. 
D)  water. 
A)  glycerol. 
B)  glucose. 
C)  amino acids. 
D)  water.

Question 20

A strong acid:

Accepted Answer

A)  holds on strongly to its hydrogen atoms, releasing very few in solution. 
B)  would cause a drop in the pH of a solution. 
C)  would cause a rise in the pH of a solution. 
D)  is both A and C. 
A)  holds on strongly to its hydrogen atoms, releasing very few in solution. 
B)  would cause a drop in the pH of a solution. 
C)  would cause a rise in the pH of a solution. 
D)  is both A and C.

Exam 2: B: The Chemical Basis of Life

If the pH of a person's blood was 7.4,it would be described as:

The term glycoprotein,a combination of two words,tells you that the compound is made of _____ with _____ being the dominant component.

Proteins are composed of ____ commonly occurring amino acids.

Match each term to its corresponding descriptive phrase. -releases a hydrogen ion into a solution,which lowers the pH

The carbon-containing molecules formed by living things are often called:

Match each term to its corresponding descriptive phrase. -lipid found in sex hormones that is made up of four rings

The atomic number of carbon is 6.How many unpaired electrons are in its outer shell?

Describe the Bohr model of the atom.

Hydrogen can form only when the hydrogen atom is covalently bonded to:

Which of the following is not a subatomic particle?

The type of reaction in which substances are combined to form more complex substances is called a(n)_____ reaction

Which of the following is not true of both triglycerides and phospholipids?

A molecule that is polar:

Prostaglandins and steroids share which of the following characteristics?

Which level of protein structure refers to the number,kind,and sequence of amino acids?

Which of the following is not true of all isotopes of oxygen?

The amino group in an amino acid is:

Match each term to its corresponding descriptive phrase. -starch or sugar

Peptide bonds join together molecules of:

A strong acid:

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

Filters

The term glycoprotein,a combination of two words,tells you that the compound is made of _ with _ being the dominant component.