Question 1

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 2

Which of the following statements concerning nucleic acids is CORRECT?

Accepted Answer

A)  Nucleic acid strands are held together by hydrogen bonds between adjacent carbohydrates. 
B)  Cellular DNA is double stranded. 
C)  All viruses have DNA genomes. 
D)  The nucleic acid polymer is composed of peptide bonds. 
E)  There are three naturally occurring purines in nucleic acids. 
A)  Nucleic acid strands are held together by hydrogen bonds between adjacent carbohydrates. 
B)  Cellular DNA is double stranded. 
C)  All viruses have DNA genomes. 
D)  The nucleic acid polymer is composed of peptide bonds. 
E)  There are three naturally occurring purines in nucleic acids.

Question 3

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 electrons are...

Question 4

The (atoms/isotopes/stereoisomers)of an element vary in the number of neutrons in the nucleus.

Accepted Answer

The answer of The (atoms/isotopes/stereoisomers)of an element vary in the...

Question 5

The DNA double helix is held together by (covalent/ionic/hydrogen)bonds.

Accepted Answer

The answer of The DNA double helix is held together...

Question 6

Figure depicts the (primary/secondary/tertiary)structure of a protein.

Accepted Answer

The answer of   
Figure depicts the (primary/secondary/tertiary)structure of...

Question 7

An atom or molecule becomes a(n)(anion/ion/cation)when it loses an electron to a more electronegative molecule.

Accepted Answer

The answer of An atom or molecule becomes a(n)(anion/ion/cation)when it...

Question 8

Compare and contrast synthesis reactions with decomposition reactions.

Accepted Answer

Synthesis and decomposition reactions ar

Question 9

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 10

Which of the following statements about proteins is FALSE?

Accepted Answer

A)  They are composed of amino acids. 
B)  They have multiple levels of structural organization. 
C)  They can be hydrophobic, hydrophilic, or both. 
D)  Their primary function is energy storage. 
E)  They are formed by dehydration synthesis reactions. 
A)  They are composed of amino acids. 
B)  They have multiple levels of structural organization. 
C)  They can be hydrophobic, hydrophilic, or both. 
D)  Their primary function is energy storage. 
E)  They are formed by dehydration synthesis reactions.

Question 11

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 12

Which of the following is found in nucleic acids?

Accepted Answer

A)  amines 
B)  carboxylic acid 
C)  purines 
D)  glycerol 
E)  R group 
A)  amines 
B)  carboxylic acid 
C)  purines 
D)  glycerol 
E)  R group

Question 13

Cell surface markers composed of both carbohydrate and lipid molecules are known as (glycoproteins/glycolipids/LPS).

Accepted Answer

The answer of Cell surface markers composed of both carbohydrate...

Question 14

The valence of an atom represents its

Accepted Answer

A)  ability to interact with other atoms. 
B)  electronegativity. 
C)  radioactivity. 
D)  ability to attract electrons. 
E)  ability to interact with water. 
A)  ability to interact with other atoms. 
B)  electronegativity. 
C)  radioactivity. 
D)  ability to attract electrons. 
E)  ability to interact with water.

Question 15

Anna is conducting an experiment using a pH indicator that is red at low pH,green at neutral pH and purple at high pH.She starts with a green solution.When she adds compound X to her solution it turns purple.Then she adds compound Z to the solution and it turns green.She adds more Z,the solution remains green.These observations suggest X is ________ and Z is ________.

Accepted Answer

A)  a base; a buffer 
B)  an acid; a base 
C)  a base; a strong acid 
D)  an acid; a buffer 
E)  a buffer; a base 
A)  a base; a buffer 
B)  an acid; a base 
C)  a base; a strong acid 
D)  an acid; a buffer 
E)  a buffer; a base

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,but...

Question 17

Cell walls containing ________ provide the best protection from drying.

Accepted Answer

A)  polysaccharides 
B)  triglycerides 
C)  waxes 
D)  peptidoglycan 
E)  sterols 
A)  polysaccharides 
B)  triglycerides 
C)  waxes 
D)  peptidoglycan 
E)  sterols

Question 18

Organisms use carbohydrates in all of the following ways EXCEPT

Accepted Answer

A)  as a component of cell walls. 
B)  as a long-term energy source. 
C)  as a short-term energy source. 
D)  to keep membranes flexible at low temperatures. 
E)  as a building block of DNA and RNA molecules. 
A)  as a component of cell walls. 
B)  as a long-term energy source. 
C)  as a short-term energy source. 
D)  to keep membranes flexible at low temperatures. 
E)  as a building block of DNA and RNA molecules.

Question 19

The double-strands of DNA result from the formation of ________ between the bases.

Accepted Answer

A)  covalent bonds 
B)  peptide bonds 
C)  ionic bonds 
D)  hydrogen bonds 
E)  α−1,4 bonds 
A)  covalent bonds 
B)  peptide bonds 
C)  ionic bonds 
D)  hydrogen bonds 
E)  α−1,4 bonds

Question 20

A nitrogenous base composed of two rings is a (purine/pyrimidine/ribose).

Accepted Answer

The answer of A nitrogenous base composed of two rings...

Exam 2: The Chemistry of Microbiology

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

Which of the following statements concerning nucleic acids is CORRECT?

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

The (atoms/isotopes/stereoisomers)of an element vary in the number of neutrons in the nucleus.

The DNA double helix is held together by (covalent/ionic/hydrogen)bonds.

Figure depicts the (primary/secondary/tertiary)structure of a protein.

An atom or molecule becomes a(n)(anion/ion/cation)when it loses an electron to a more electronegative molecule.

Compare and contrast synthesis reactions with decomposition reactions.

Lipids found in the cytoplasmic membranes of all eukaryotic cells are

Which of the following statements about proteins is FALSE?

A protein is a ________ of amino acids.

Which of the following is found in nucleic acids?

Cell surface markers composed of both carbohydrate and lipid molecules are known as (glycoproteins/glycolipids/LPS).

The valence of an atom represents its

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).

Cell walls containing ________ provide the best protection from drying.

Organisms use carbohydrates in all of the following ways EXCEPT

The double-strands of DNA result from the formation of ________ between the bases.

A nitrogenous base composed of two rings is a (purine/pyrimidine/ribose).

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

Pathogenic Gram Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic DNA Viruses

Pathogenic RNA Viruses

Applied and Environmental Microbiology

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