Question 1

The number of ________ of an element determines its atomic number.

Accepted Answer

A)  protons 
B)  neutrons 
C)  electrons 
D)  valence electrons 
E)  isotopes 
A)  protons 
B)  neutrons 
C)  electrons 
D)  valence electrons 
E)  isotopes

Question 2

Which of the following is NOT a characteristic of phospholipids?

Accepted Answer

A)  they are found in cellular membranes. 
B)  they can form micelles and bilayers. 
C)  they contain fatty acids that associate with water. 
D)  they contain a hydrophilic phosphate "head." 
E)  they contain two fatty acids and a phosphate functional group. 
A)  they are found in cellular membranes. 
B)  they can form micelles and bilayers. 
C)  they contain fatty acids that associate with water. 
D)  they contain a hydrophilic phosphate "head." 
E)  they contain two fatty acids and a phosphate functional group.

Question 3

Radioactive iodine is sometimes used to treat thyroid cancer. This is an example of the use of (isotopes/elements/ isomers) in medical treatment.

Accepted Answer

The answer of Radioactive iodine is sometimes used to treat...

Question 4

The isotopes of an element vary in the number of (electrons/neutrons/protons) in the atom.

Accepted Answer

The answer of The isotopes of an element vary in...

Question 5

Which of the following is NOT a characteristic of saturated fats?

Accepted Answer

A)  they are usually solid at room temperature. 
B)  they contain at least one double bond. 
C)  they are found in animals. 
D)  their fatty acids pack tightly together. 
E)  they are a form of stored energy. 
A)  they are usually solid at room temperature. 
B)  they contain at least one double bond. 
C)  they are found in animals. 
D)  their fatty acids pack tightly together. 
E)  they are a form of stored energy.

Question 6

A(n) (nonpolar/polar/ionic/hydrogen) bond is one in which electrons are shared equally between atoms.

Accepted Answer

The answer of A(n) (nonpolar/polar/ionic/hydrogen) bond is one in which...

Question 7

All of the following are components of an amino acid EXCEPT a(n)

Accepted Answer

A)  carboxyl group. 
B)  pentose group. 
C)  amino group. 
D)  α-carbon. 
E)  R group. 
A)  carboxyl group. 
B)  pentose group. 
C)  amino group. 
D)  α-carbon. 
E)  R group.

Question 8

Denaturation of a protein is always permanent.

Accepted Answer

A) True 
 B)False

Question 9

The side groups of amino acids can interact with each other and with other molecules.

Accepted Answer

A) True 
 B)False

Question 10

Tertiary and quaternary structure of proteins involves ________ bonds.

Accepted Answer

A)  hydrogen 
B)  ionic 
C)  polar covalent 
D)  nonpolar covalent 
E)  ionic, hydrogen, polar, and nonpolar covalent 
A)  hydrogen 
B)  ionic 
C)  polar covalent 
D)  nonpolar covalent 
E)  ionic, hydrogen, polar, and nonpolar covalent

Question 11

The atomic mass of this stable isotope atom (Figure 2.1) is

Accepted Answer

A)  4. 
B)  6. 
C)  10. 
D)  12. 
E)  cannot be determined from the available information 
A)  4. 
B)  6. 
C)  10. 
D)  12. 
E)  cannot be determined from the available information

Question 12

The reverse of a dehydration synthesis reaction is a(n) ________ reaction.

Accepted Answer

A)  anabolic 
B)  exchange 
C)  hydrolytic 
D)  endothermic 
E)  metabolic 
A)  anabolic 
B)  exchange 
C)  hydrolytic 
D)  endothermic 
E)  metabolic

Question 13

Matter composed of a single type of atom is known as a(n)

Accepted Answer

A)  element. 
B)  mineral. 
C)  molecule. 
D)  compound. 
E)  electron. 
A)  element. 
B)  mineral. 
C)  molecule. 
D)  compound. 
E)  electron.

Question 14

Lipids found in the cytoplasmic membranes of all eukaryotic cells are

Accepted Answer

A)  polyunsaturated fats. 
B)  phospholipids. 
C)  steroids. 
D)  waxes. 
E)  triglycerides. 
A)  polyunsaturated fats. 
B)  phospholipids. 
C)  steroids. 
D)  waxes. 
E)  triglycerides.

Question 15

A protein is a ________ of amino acids.

Accepted Answer

A)  monomer 
B)  polymer 
C)  bilayer 
D)  solution 
E)  decomposition product 
A)  monomer 
B)  polymer 
C)  bilayer 
D)  solution 
E)  decomposition product

Question 16

Jim adds an acid to a solution, but finds the pH has not changed afterward. This suggests the solution contains a(n) (anion/buffer/salt).

Accepted Answer

The answer of Jim adds an acid to a solution,...

Question 17

When a base dissolves in water it releases a(n) (electron/cation/hydrogen ion).

Accepted Answer

The answer of When a base dissolves in water it...

Question 18

Hydrogen bonds are stronger than covalent bonds.

Accepted Answer

A) True 
 B)False

Question 19

An unbranched polymer composed of simple sugars is a(n)

Accepted Answer

A)  protein. 
B)  triglyceride. 
C)  starch. 
D)  glycoprotein. 
E)  amino acid. 
A)  protein. 
B)  triglyceride. 
C)  starch. 
D)  glycoprotein. 
E)  amino acid.

Question 20

Salts are produced from exchange reactions in which acids and bases neutralize each other.

Accepted Answer

A) True 
 B)False

Exam 2: The Chemistry of Microbiology

The number of ________ of an element determines its atomic number.

Which of the following is NOT a characteristic of phospholipids?

Radioactive iodine is sometimes used to treat thyroid cancer. This is an example of the use of (isotopes/elements/ isomers) in medical treatment.

The isotopes of an element vary in the number of (electrons/neutrons/protons) in the atom.

Which of the following is NOT a characteristic of saturated fats?

A(n) (nonpolar/polar/ionic/hydrogen) bond is one in which electrons are shared equally between atoms.

All of the following are components of an amino acid EXCEPT a(n)

Denaturation of a protein is always permanent.

The side groups of amino acids can interact with each other and with other molecules.

Tertiary and quaternary structure of proteins involves ________ bonds.

The atomic mass of this stable isotope atom (Figure 2.1) is

The reverse of a dehydration synthesis reaction is a(n) ________ reaction.

Matter composed of a single type of atom is known as a(n)

Lipids found in the cytoplasmic membranes of all eukaryotic cells are

A protein is a ________ of amino acids.

Jim adds an acid to a solution, but finds the pH has not changed afterward. This suggests the solution contains a(n) (anion/buffer/salt).

When a base dissolves in water it releases a(n) (electron/cation/hydrogen ion).

Hydrogen bonds are stronger than covalent bonds.

An unbranched polymer composed of simple sugars is a(n)

Salts are produced from exchange reactions in which acids and bases neutralize each other.

A Brief History of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Industrial Microbiology

Microbial Ecology and Microbiomes

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