Question 1

Normal microbiota are responsible for all of the following except

Accepted Answer

A)  producing vitamins for us. 
B)  controlling epigenetic expression. 
C)  impacting our moods and brain functions. 
D)  training our immune system. 
E)  helping us digest foods. 
A)  producing vitamins for us. 
B)  controlling epigenetic expression. 
C)  impacting our moods and brain functions. 
D)  training our immune system. 
E)  helping us digest foods.

Question 2

Carriers of the sickle- cell gene

Accepted Answer

A)  are often found in high concentrations in U.S. cities. 
B)  experience painful changes in nerve cell shape. 
C)  are more likely to die from a malaria infection. 
D)  have a survival advantage in areas where malaria is common. 
E)  are more susceptible to contracting malaria. 
A)  are often found in high concentrations in U.S. cities. 
B)  experience painful changes in nerve cell shape. 
C)  are more likely to die from a malaria infection. 
D)  have a survival advantage in areas where malaria is common. 
E)  are more susceptible to contracting malaria.

Question 3

What is the order of the taxonomic hierarchy from least specific to most specific?

Accepted Answer

A)  domain, phylum, order, kingdom, class, family, genus, species 
B)  domain, kingdom, phylum, class, order, family, genus, species 
C)  domain, order, class, kingdom, phylum, species, family, genus 
D)  class, order, phylum, kingdom, domain, genus, family, species 
E)  species, genus, order, family, class, phylum, kingdom, domain 
A)  domain, phylum, order, kingdom, class, family, genus, species 
B)  domain, kingdom, phylum, class, order, family, genus, species 
C)  domain, order, class, kingdom, phylum, species, family, genus 
D)  class, order, phylum, kingdom, domain, genus, family, species 
E)  species, genus, order, family, class, phylum, kingdom, domain

Question 4

Explain how disruptions in normal microbiota can lead to infections.

Accepted Answer

When an antibiotic is used, it may kill

Question 5

All of the following involve biofilms except

Accepted Answer

A)  inner ear infections. 
B)  kidney stones. 
C)  conjunctivitis. 
D)  endocarditis. 
E)  atherosclerosis. 
A)  inner ear infections. 
B)  kidney stones. 
C)  conjunctivitis. 
D)  endocarditis. 
E)  atherosclerosis.

Question 6

Which of the following statements is true about the decolorizing step for the acid- fast stain?

Accepted Answer

A)  The decolorizing step is the differentiating step. 
B)  Because acid- fast bacteria have a waxy cell wall that resists decolorization by the acetone- alcohol rinse, they appear a deep blue at the end of the procedure. 
C)  Over- decolorizing can lead to false- positive results. 
D)  Non- acid- fast bacteria appear bright pink- red at the end of the procedure. 
E)  Acetone- alcohol solution is the decolorizing agent. 
A)  The decolorizing step is the differentiating step. 
B)  Because acid- fast bacteria have a waxy cell wall that resists decolorization by the acetone- alcohol rinse, they appear a deep blue at the end of the procedure. 
C)  Over- decolorizing can lead to false- positive results. 
D)  Non- acid- fast bacteria appear bright pink- red at the end of the procedure. 
E)  Acetone- alcohol solution is the decolorizing agent.

Question 7

Why can't prokaryotic species be defined as a group of similar organisms that could sexually reproduce together?

Accepted Answer

A)  The mating rituals of bacteria have not been studied enough. 
B)  Bacteria are all too different to be considered similar. 
C)  We can't see them in enough detail to tell how similar they really are yet. 
D)  Bacteria reproduce asexually. 
E)  They can be. 
A)  The mating rituals of bacteria have not been studied enough. 
B)  Bacteria are all too different to be considered similar. 
C)  We can't see them in enough detail to tell how similar they really are yet. 
D)  Bacteria reproduce asexually. 
E)  They can be.

Question 8

Which of the following statements is false?

Accepted Answer

A)  Immersion oil is used to get a better resolution at high- power magnifications. 
B)  Immersion oil has a lower refractive index than the glass slide to help increase sample clarity. 
C)  Resolution is the ability to distinguish two distinct points as separate. 
D)  Immersion oil channels as much light as possible up through the objective lens instead of being bent. 
E)  Ultimately, the resolving power of bright field microscopes is limited by the wavelength of visible light. 
A)  Immersion oil is used to get a better resolution at high- power magnifications. 
B)  Immersion oil has a lower refractive index than the glass slide to help increase sample clarity. 
C)  Resolution is the ability to distinguish two distinct points as separate. 
D)  Immersion oil channels as much light as possible up through the objective lens instead of being bent. 
E)  Ultimately, the resolving power of bright field microscopes is limited by the wavelength of visible light.

Question 9

Which of the following can be determined using simple stains?

Accepted Answer

A)  the presence of capsules 
B)  size and shape 
C)  size, shape and cellular arrangement 
D)  the number and position of flagella 
E)  the presence of endospores 
A)  the presence of capsules 
B)  size and shape 
C)  size, shape and cellular arrangement 
D)  the number and position of flagella 
E)  the presence of endospores

Question 10

showed that biogenesis is responsible for the propagation of life.

Accepted Answer

A)  Antonie van Leeuwenhoek 
B)  Carl Linnaeus 
C)  Louis Pasteur 
D)  Robert Hooke 
E)  Joseph Lister 
A)  Antonie van Leeuwenhoek 
B)  Carl Linnaeus 
C)  Louis Pasteur 
D)  Robert Hooke 
E)  Joseph Lister

Question 11

Inference- observation confusion occurs when someone

Accepted Answer

A)  incorrectly assesses a patient. 
B)  remembers events wrong. 
C)  lies about what happened. 
D)  jumps to a conclusion. 
E)  cannot understand your accent. 
A)  incorrectly assesses a patient. 
B)  remembers events wrong. 
C)  lies about what happened. 
D)  jumps to a conclusion. 
E)  cannot understand your accent.

Question 12

Which of the following statements about bright field microscopy are true?

Accepted Answer

A)  Bright field microscopy is great for seeing living samples. 
B)  Bright field microscopy has the sample appear as a brighter contrasting image on a dark background. 
C)  Dark field, phase contract, and differential interference contract microscopy are better for observing dead samples. 
D)  Bright field microscopy is the simplest and most common form of microscopy. 
E)  Bright field microscopy is able to see specimens without natural coloration. 
A)  Bright field microscopy is great for seeing living samples. 
B)  Bright field microscopy has the sample appear as a brighter contrasting image on a dark background. 
C)  Dark field, phase contract, and differential interference contract microscopy are better for observing dead samples. 
D)  Bright field microscopy is the simplest and most common form of microscopy. 
E)  Bright field microscopy is able to see specimens without natural coloration.

Question 13

Which of the following statements is true?

Accepted Answer

A)  Picking which type of media format to use depends only on the space available. 
B)  Picking which type of media to use depends on how much money you willing to spend. 
C)  Scientists were not able to grow bacteria in the lab until the creation of the Petri dish. 
D)  Media for bacterial growth only comes in a few varieties. 
E)  Agar is used as a solidifying agent for bacterial culture. 
A)  Picking which type of media format to use depends only on the space available. 
B)  Picking which type of media to use depends on how much money you willing to spend. 
C)  Scientists were not able to grow bacteria in the lab until the creation of the Petri dish. 
D)  Media for bacterial growth only comes in a few varieties. 
E)  Agar is used as a solidifying agent for bacterial culture.

Question 14

All of the following are or can be produced by microbes except

Accepted Answer

A)  biofuels like diesel. 
B)  drugs like penicillin. 
C)  food like chocolate. 
D)  consumer products like biodegradable plastics. 
E)  electronics like computer memory. 
A)  biofuels like diesel. 
B)  drugs like penicillin. 
C)  food like chocolate. 
D)  consumer products like biodegradable plastics. 
E)  electronics like computer memory.

Question 15

predict what happens, while _ explain how and why something occurs.

Accepted Answer

A)  Theories; laws 
B)  Observations; hypotheses 
C)  Observations; conclusions 
D)  Hypotheses; conclusions 
E)  Laws; theories 
A)  Theories; laws 
B)  Observations; hypotheses 
C)  Observations; conclusions 
D)  Hypotheses; conclusions 
E)  Laws; theories

Question 16

Which of the following does not contribute to shifts in our normal microbiota?

Accepted Answer

A)  proper hand- washing technique 
B)  age 
C)  diet 
D)  hormonal changes 
E)  our general environment 
A)  proper hand- washing technique 
B)  age 
C)  diet 
D)  hormonal changes 
E)  our general environment

Question 17

Robert Hooke refined earlier versions of the microscope and became the first to see bacteria.

Accepted Answer

A) True 
 B)False

Question 18

Fixation adheres the sample to the slide, so that it is not as easily washed away during the staining process, but does not kill most of the cells in the specimen so that they can be clearly viewed.

Accepted Answer

A) True 
 B)False

Question 19

Proper hand- washing technique can remove normal microbiota.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is the correct way to type a scientific name?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Exam 1: Introduction to Microbiology

Normal microbiota are responsible for all of the following except

Carriers of the sickle- cell gene

What is the order of the taxonomic hierarchy from least specific to most specific?

Explain how disruptions in normal microbiota can lead to infections.

All of the following involve biofilms except

Which of the following statements is true about the decolorizing step for the acid- fast stain?

Why can't prokaryotic species be defined as a group of similar organisms that could sexually reproduce together?

Which of the following statements is false?

Which of the following can be determined using simple stains?

showed that biogenesis is responsible for the propagation of life.

Inference- observation confusion occurs when someone

Which of the following statements about bright field microscopy are true?

Which of the following statements is true?

All of the following are or can be produced by microbes except

predict what happens, while _ explain how and why something occurs.

Which of the following does not contribute to shifts in our normal microbiota?

Robert Hooke refined earlier versions of the microscope and became the first to see bacteria.

Fixation adheres the sample to the slide, so that it is not as easily washed away during the staining process, but does not kill most of the cells in the specimen so that they can be clearly viewed.

Proper hand- washing technique can remove normal microbiota.

Which of the following is the correct way to type a scientific name?

Biochemistry Basics

Introduction to Prokaryotic Cells

Introduction to Eukaryotic Cells

Genetics

Viruses and Prions

Fundamentals of Microbial Growth

Microbial Metabolism

Principles of Infectious Disease and Epidemiology

Host-Microbe Interactions and Pathogenesis

Innate Immunity

Adaptive Immunity

Immune System Disorders

Vaccines and Biotechnology-Based Diagnostics and Therapeutics

Antimicrobial Drugs

Respiratory System Infections

Skin and Eye Infections

Nervous System Infections

Digestive System Infections

Urinary and Reproductive System Infections

Cardiovascular and Lymphatic Infections

Filters