Question 1

An atom that contains 20 protons, 21 neutrons, and 20 electrons has

Accepted Answer

A)  a positive charge. 
B)  a negative charge. 
C)  no charge (electrically neutral). 
D)  not enough information is given to determine its charge. 
A)  a positive charge. 
B)  a negative charge. 
C)  no charge (electrically neutral). 
D)  not enough information is given to determine its charge.

Question 2

Which of the following is a structural protein?

Accepted Answer

A)  Collagen 
B)  Keratin 
C)  Enzymes 
D)  Both A and B 
A)  Collagen 
B)  Keratin 
C)  Enzymes 
D)  Both A and B

Question 3

Match each term with its corresponding description or definition.
-Process by which reactants combine only after hydrogen and oxygen atoms have been removed

Accepted Answer

A) Nucleus 
B) Ionic bond 
C) Atomic mass 
D) Compound 
E) Electrolyte
F)Atomic number
G)Covalent bonds
H)Orbitals
I)Hydrolysis
J)Dehydration synthesis
K)Acid
L)Base 
A) Nucleus 
B) Ionic bond 
C) Atomic mass 
D) Compound 
E) Electrolyte
F)Atomic number
G)Covalent bonds
H)Orbitals
I)Hydrolysis
J)Dehydration synthesis
K)Acid
L)Base

Question 4

Match each term with its corresponding description or definition.
-Compound that produces H+ ions

Accepted Answer

A) Nucleus 
B) Ionic bond 
C) Atomic mass 
D) Compound 
E) Electrolyte
F)Atomic number
G)Covalent bonds
H)Orbitals
I)Hydrolysis
J)Dehydration synthesis
K)Acid
L)Base 
A) Nucleus 
B) Ionic bond 
C) Atomic mass 
D) Compound 
E) Electrolyte
F)Atomic number
G)Covalent bonds
H)Orbitals
I)Hydrolysis
J)Dehydration synthesis
K)Acid
L)Base

Question 5

The process of dehydration synthesis

Accepted Answer

A)  uses water to turn large molecules into smaller ones. 
B)  adds a molecule of water to the reactants. 
C)  converts smaller molecules into larger ones by removing water. 
D)  both A and B. 
A)  uses water to turn large molecules into smaller ones. 
B)  adds a molecule of water to the reactants. 
C)  converts smaller molecules into larger ones by removing water. 
D)  both A and B.

Question 6

An element is a substance composed of only one type of atom.

Accepted Answer

A) True 
 B)False

Question 7

The subatomic particle that determines how an atom unites with other atoms is the

Accepted Answer

A)  proton. 
B)  neutron. 
C)  electron. 
D)  both A and B. 
A)  proton. 
B)  neutron. 
C)  electron. 
D)  both A and B.

Question 8

The process of dehydration synthesis makes bigger molecules from smaller molecules.

Accepted Answer

A) True 
 B)False

Question 9

Fats tend to be solids at room temperature.

Accepted Answer

A) True 
 B)False

Question 10

The electrolyte most often formed by magnesium (Mg) is Mg++. This shows that the ion has two more electrons than protons.

Accepted Answer

A) True 
 B)False

Question 11

The formula for glucose is C6H12O6. This indicates that there are 24 atoms in a molecule of glucose.

Accepted Answer

A) True 
 B)False

Question 12

Match each organic compound with its corresponding description.
-Lipid that has two fatty acids and is important in the cell membrane

Accepted Answer

A) Carbohydrates 
B) Triglycerides 
C) Phospholipids 
D) Cholesterol 
E) Proteins
F)RNA
G)DNA 
A) Carbohydrates 
B) Triglycerides 
C) Phospholipids 
D) Cholesterol 
E) Proteins
F)RNA
G)DNA

Question 13

The basic building blocks of protein are held together by peptide bonds.

Accepted Answer

A) True 
 B)False

Question 14

The process of hydrolysis has water as one of its end products.

Accepted Answer

A) True 
 B)False

Question 15

A triglyceride contains two fatty acid molecules.

Accepted Answer

A) True 
 B)False

Question 16

Phospholipids are important molecules in the cell membrane.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is an example of a monosaccharide?

Accepted Answer

A)  Sucrose 
B)  Glucose 
C)  Lactose 
D)  Glycogen 
A)  Sucrose 
B)  Glucose 
C)  Lactose 
D)  Glycogen

Question 18

Phospholipids

Accepted Answer

A)  contain glycerol. 
B)  contain two fatty acids. 
C)  contain three fatty acids. 
D)  both A and B. 
A)  contain glycerol. 
B)  contain two fatty acids. 
C)  contain three fatty acids. 
D)  both A and B.

Question 19

All molecules are not necessarily compounds.

Accepted Answer

A) True 
 B)False

Question 20

A solution with a pH of 4

Accepted Answer

A)  has 100 times more H+ ions than a solution with a pH of 2. 
B)  has 100 times fewer H+ ions than a solution with a pH of 2. 
C)  has 100 times fewer H+ ions than a solution with a pH of 6. 
D)  is basic. 
A)  has 100 times more H+ ions than a solution with a pH of 2. 
B)  has 100 times fewer H+ ions than a solution with a pH of 2. 
C)  has 100 times fewer H+ ions than a solution with a pH of 6. 
D)  is basic.

Exam 2: Chemistry of Life

An atom that contains 20 protons, 21 neutrons, and 20 electrons has

Which of the following is a structural protein?

Match each term with its corresponding description or definition. -Process by which reactants combine only after hydrogen and oxygen atoms have been removed

Match each term with its corresponding description or definition. -Compound that produces H+ ions

The process of dehydration synthesis

An element is a substance composed of only one type of atom.

The subatomic particle that determines how an atom unites with other atoms is the

The process of dehydration synthesis makes bigger molecules from smaller molecules.

Fats tend to be solids at room temperature.

The electrolyte most often formed by magnesium (Mg) is Mg++. This shows that the ion has two more electrons than protons.

The formula for glucose is C6H12O6. This indicates that there are 24 atoms in a molecule of glucose.

Match each organic compound with its corresponding description. -Lipid that has two fatty acids and is important in the cell membrane

The basic building blocks of protein are held together by peptide bonds.

The process of hydrolysis has water as one of its end products.

A triglyceride contains two fatty acid molecules.

Phospholipids are important molecules in the cell membrane.

Which of the following is an example of a monosaccharide?

Phospholipids

All molecules are not necessarily compounds.

A solution with a pH of 4

Introduction to the Body

Cells

Tissues

Organ Systems

Mechanisms of Disease

Skin and Membranes

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Reproductive Systems

Growth, Development, and Aging

Genetics and Genetic Diseases

Filters

Match each term with its corresponding description or definition. -Compound that produces H⁺ ions

The electrolyte most often formed by magnesium (Mg) is Mg⁺⁺. This shows that the ion has two more electrons than protons.

The formula for glucose is C₆H₁₂O₆. This indicates that there are 24 atoms in a molecule of glucose.