Question 1

What is the most common HAI?

Accepted Answer

A)  Urinary tract infections 
B)  Surgical site infections 
C)  Respiratory infections 
D)  Sepsis 
A)  Urinary tract infections 
B)  Surgical site infections 
C)  Respiratory infections 
D)  Sepsis A

Question 2

How has pasteurization made milk and other dairy products safer to consume? (Select all that apply)

Accepted Answer

A)  It kills pathogenic microbes without affecting the taste or nutritional value. 
B)  Pasteurization sterilizes milk and other dairy products. 
C)  Pasteurization reduces spoilage of dairy products. 
D)  Pasteurization makes milk easier to digest. 
A)  It kills pathogenic microbes without affecting the taste or nutritional value. 
B)  Pasteurization sterilizes milk and other dairy products. 
C)  Pasteurization reduces spoilage of dairy products. 
D)  Pasteurization makes milk easier to digest. A,C

Question 3

Commercial food preparation focuses on eliminating disease-causing and spoilage-causing microbes via ________. (Select all that apply)

Accepted Answer

A)  use of high pressure for canning 
B)  heat for pasteurization 
C)  use of chemical preservatives like sugar and salt 
D)  use of ionizing radiation to scramble microbial DNA 
A)  use of high pressure for canning 
B)  heat for pasteurization 
C)  use of chemical preservatives like sugar and salt 
D)  use of ionizing radiation to scramble microbial DNA A,B,C,D

Question 4

Which of the following is a reason that Microbiology is a unique part of the study of life? (Select all that apply)

Accepted Answer

A)  Microorganisms are too small to be seen with the naked eye. 
B)  Microorganisms are our planet's dominant life form. 
C)  Microorganisms live in and on other macroorganisms like humans. 
D)  Microorganisms occupy most ecological niches on Earth. 
A)  Microorganisms are too small to be seen with the naked eye. 
B)  Microorganisms are our planet's dominant life form. 
C)  Microorganisms live in and on other macroorganisms like humans. 
D)  Microorganisms occupy most ecological niches on Earth.

Question 5

Bioreactors are used to grow large populations of bacteria for the production of ________.

Accepted Answer

A)  beer 
B)  kefir 
C)  vitamins 
D)  human insulin 
A)  beer 
B)  kefir 
C)  vitamins 
D)  human insulin

Question 6

________ are photosynthetic microbes.

Accepted Answer

A)  Algae 
B)  Bacteria 
C)  Fungi 
D)  Protozoans 
E)  Helminths 
A)  Algae 
B)  Bacteria 
C)  Fungi 
D)  Protozoans 
E)  Helminths

Question 7

When treated for an infection with a strong antibiotic, the normal microbiota of the vagina may also be destroyed, predisposing a woman to an infection with ________.

Accepted Answer

A)  Escherichia coli 
B)  Candida albicans 
C)  Clostridium difficile 
D)  Lactobacillus spp. 
A)  Escherichia coli 
B)  Candida albicans 
C)  Clostridium difficile 
D)  Lactobacillus spp.

Question 8

What factors will increase the risk of EIDs (emerging infectious diseases) in the future? (Select all that apply)

Accepted Answer

A)  Misuse of antibiotics 
B)  Modern transportation 
C)  Human movement into new habitats 
D)  Continued evolution of microbes 
A)  Misuse of antibiotics 
B)  Modern transportation 
C)  Human movement into new habitats 
D)  Continued evolution of microbes

Question 9

What does the term "pathogenesis" mean?

Accepted Answer

A)  Development of an infectious disease 
B)  Development of a pathogen 
C)  Development of antibodies 
D)  Development of a non-communicable disease 
A)  Development of an infectious disease 
B)  Development of a pathogen 
C)  Development of antibodies 
D)  Development of a non-communicable disease

Question 10

Which of the following statements BEST describes the major difference between the noncellular infectious particles?

Accepted Answer

A)  Viruses have either DNA or RNA, viroids have only RNA, and prions have neither DNA or RNA 
B)  Viruses have both DNA and RNA, viroids have only RNA and prions have proteins 
C)  Viruses have either DNA or RNA, Viroids have only DNA and prions have proteins and RNA 
D)  Viruses have both DNA and RNA, viroids have only RNA and prions have only DNA 
A)  Viruses have either DNA or RNA, viroids have only RNA, and prions have neither DNA or RNA 
B)  Viruses have both DNA and RNA, viroids have only RNA and prions have proteins 
C)  Viruses have either DNA or RNA, Viroids have only DNA and prions have proteins and RNA 
D)  Viruses have both DNA and RNA, viroids have only RNA and prions have only DNA

Question 11

What is a notable limitation of MALDI TOF?

Accepted Answer

A)  Specimen preparation time 
B)  Specimen run time 
C)  Accuracy of pathogen identification 
D)  Lack of antibiotic susceptibility data 
A)  Specimen preparation time 
B)  Specimen run time 
C)  Accuracy of pathogen identification 
D)  Lack of antibiotic susceptibility data

Question 12

What is the correct order of decreasing size of these organisms?

Accepted Answer

A)  Rabies virus, Streptococcus pneumoniae bacterium, Trypanosoma brucei protozoan 
B)  Streptococcus pneumoniae bacterium, Rabies virus, Trypanosoma brucei protozoan 
C)  Streptococcus pneumoniae bacterium, Trypanosoma brucei protozoan, Rabies virus 
D)  Trypanosoma brucei protozoan, Streptococcus pneumoniae bacterium, Rabies virus 
A)  Rabies virus, Streptococcus pneumoniae bacterium, Trypanosoma brucei protozoan 
B)  Streptococcus pneumoniae bacterium, Rabies virus, Trypanosoma brucei protozoan 
C)  Streptococcus pneumoniae bacterium, Trypanosoma brucei protozoan, Rabies virus 
D)  Trypanosoma brucei protozoan, Streptococcus pneumoniae bacterium, Rabies virus

Question 13

Microbes are the dominant life form on Planet Earth because ________. (Select all that apply)

Accepted Answer

A)  at an estimated 5×1030 bacteria, they are the most abundant organisms 
B)  there are an estimated 10 million to 1 billion different microbial species 
C)  microbes occupy all ecological niches of the biosphere 
D)  microbes have the most complex cell structure 
A)  at an estimated 5×1030 bacteria, they are the most abundant organisms 
B)  there are an estimated 10 million to 1 billion different microbial species 
C)  microbes occupy all ecological niches of the biosphere 
D)  microbes have the most complex cell structure

Question 14

The concept of antibiosis was accidentally discovered by ________.

Accepted Answer

A)  pasteur 
B)  florey 
C)  chain 
D)  fleming 
A)  pasteur 
B)  florey 
C)  chain 
D)  fleming

Question 15

________ contain a nucleus. (Select all that apply)

Accepted Answer

A)  Viruses 
B)  Bacteria 
C)  Fungi 
D)  Algae 
E)  Helminths 
A)  Viruses 
B)  Bacteria 
C)  Fungi 
D)  Algae 
E)  Helminths

Question 16

Which of the following items should be cleaned with a disinfectant? (Select all that apply)

Accepted Answer

A)  a patient's skin before receiving an injection 
B)  doorknobs, handles and other high-touch surfaces 
C)  a wrestling mat after practice 
D)  your hands before eating a meal 
A)  a patient's skin before receiving an injection 
B)  doorknobs, handles and other high-touch surfaces 
C)  a wrestling mat after practice 
D)  your hands before eating a meal

Question 17

Selective toxicity is more challenging when treating a viral infection than treating a bacterial infection because ________. (Select all that apply)

Accepted Answer

A)  viruses are intracellular pathogens and effective treatment typically destroys the infected host cell 
B)  viruses have thick cell walls made of chitin which slows the penetration of antibiotics 
C)  bacteria have many prokaryotic-specific features to target with antibiotics that won't cause collateral damage to the eukaryotic host cells 
D)  viruses are eukaryotic like the host cells they infect 
A)  viruses are intracellular pathogens and effective treatment typically destroys the infected host cell 
B)  viruses have thick cell walls made of chitin which slows the penetration of antibiotics 
C)  bacteria have many prokaryotic-specific features to target with antibiotics that won't cause collateral damage to the eukaryotic host cells 
D)  viruses are eukaryotic like the host cells they infect

Question 18

In order of increasing complexity, the 3 major groups of microorganisms are ________.

Accepted Answer

A)  noncellular microbes, prokaryotic microbes and eukaryotic microbes 
B)  protozoans, viruses and bacteria 
C)  prions, viruses and bacteria 
D)  eukaryotic microbes, prokaryotic microbes and viruses 
A)  noncellular microbes, prokaryotic microbes and eukaryotic microbes 
B)  protozoans, viruses and bacteria 
C)  prions, viruses and bacteria 
D)  eukaryotic microbes, prokaryotic microbes and viruses

Question 19

Antibiosis is ________. (Select all that apply)

Accepted Answer

A)  unique to prokaryotic microbes 
B)  an interaction between organisms that harms one of them 
C)  a naturally-occurring situation that helps an organism better compete for resources within a microbial community 
D)  the preferred option whenever an infection is diagnosed 
A)  unique to prokaryotic microbes 
B)  an interaction between organisms that harms one of them 
C)  a naturally-occurring situation that helps an organism better compete for resources within a microbial community 
D)  the preferred option whenever an infection is diagnosed

Question 20

How can we interrupt microbial growth that is causing disease in the human body?

Accepted Answer

A)  Generate a fever so body temperature is no longer favorable for bacterial growth 
B)  Change the pH 
C)  Modify oxygen levels 
D)  Increase food sources 
A)  Generate a fever so body temperature is no longer favorable for bacterial growth 
B)  Change the pH 
C)  Modify oxygen levels 
D)  Increase food sources

Exam 1: Microbial World

What is the most common HAI?

How has pasteurization made milk and other dairy products safer to consume? (Select all that apply)

Commercial food preparation focuses on eliminating disease-causing and spoilage-causing microbes via ________. (Select all that apply)

Which of the following is a reason that Microbiology is a unique part of the study of life? (Select all that apply)

Bioreactors are used to grow large populations of bacteria for the production of ________.

________ are photosynthetic microbes.

When treated for an infection with a strong antibiotic, the normal microbiota of the vagina may also be destroyed, predisposing a woman to an infection with ________.

What factors will increase the risk of EIDs (emerging infectious diseases) in the future? (Select all that apply)

What does the term "pathogenesis" mean?

Which of the following statements BEST describes the major difference between the noncellular infectious particles?

What is a notable limitation of MALDI TOF?

What is the correct order of decreasing size of these organisms?

Microbes are the dominant life form on Planet Earth because ________. (Select all that apply)

The concept of antibiosis was accidentally discovered by ________.

________ contain a nucleus. (Select all that apply)

Which of the following items should be cleaned with a disinfectant? (Select all that apply)

Selective toxicity is more challenging when treating a viral infection than treating a bacterial infection because ________. (Select all that apply)

In order of increasing complexity, the 3 major groups of microorganisms are ________.

Antibiosis is ________. (Select all that apply)

How can we interrupt microbial growth that is causing disease in the human body?

An Introduction to the Chemical Basis of Life

The Biochemistry of Macromolecules

Microscopy

Prokaryote Organisms

Eukaryotic Cells

Eukaryotic Organisms

Viruses and Infectious Particles

Metabolism

Microbial Genetics and Genetic Engineering

Microbial Growth and Control

Antimicrobial Agents

Innate Immunity

Adaptive Immunity

Vaccination, Immunoassays, and Immune Disorders

Microbial Pathogenesis

Epidemiology and Infection Control

Diseases of the Respiratory System

Diseases of the Skin and Eyes

Diseases of the Gastrointestinal System

Diseases of the Urogenital System

Diseases of the Nervous System

Diseases of the Cardiovascular and Lymphatic Systems

Environmental and Industrial Microbiology

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