Question 1

Which of these scientists were involved in investigating the idea of spontaneous generation?

Accepted Answer

A)  Redi and van Leeuwenhoek 
B)  Redi and Pasteur 
C)  van Leeuwenhoek and Pasteur 
D)  Pasteur and Escherich 
E)  Escherich and Redi 
A)  Redi and van Leeuwenhoek 
B)  Redi and Pasteur 
C)  van Leeuwenhoek and Pasteur 
D)  Pasteur and Escherich 
E)  Escherich and Redi

Question 2

You explain to Janus that he may have an infection in his wound, possibly caused by the organism Staphylococcus epidermidis. You tell him that the genus name of the organism indicates that

Accepted Answer

A)  the cells are found on the skin. 
B)  the cells are round and grow in clusters. 
C)  the organism is a pathogen. 
D)  the organism is normal microbiota. 
E)  the cells have a golden color. 
A)  the cells are found on the skin. 
B)  the cells are round and grow in clusters. 
C)  the organism is a pathogen. 
D)  the organism is normal microbiota. 
E)  the cells have a golden color.

Question 3

Plants are dependent on microorganisms for

Accepted Answer

A)  providing oxygen in a usable form. 
B)  providing water. 
C)  changing atmospheric nitrogen to a usable form. 
D)  providing simple carbohydrates. 
E)  providing complex proteins. 
A)  providing oxygen in a usable form. 
B)  providing water. 
C)  changing atmospheric nitrogen to a usable form. 
D)  providing simple carbohydrates. 
E)  providing complex proteins.

Question 4

Which of these may pertain to the term strain?

Accepted Answer

A)  E. coli 0157:H7 
B)  E. coli 
C)  Minor variation of a species 
D)  Major variation of a species 
E)  E. coli 0157:H7 AND minor variation of a species 
A)  E. coli 0157:H7 
B)  E. coli 
C)  Minor variation of a species 
D)  Major variation of a species 
E)  E. coli 0157:H7 AND minor variation of a species

Question 5

Select the TRUE statement regarding viruses.

Accepted Answer

A)  Most viruses are smaller than bacteria but bigger than mitochondria. 
B)  Viruses may be unicellular or multicellular. 
C)  Viruses have completely random shapes. 
D)  Viruses always cause death of the host cells they infect. 
E)  Virus are considered living because they contain nucleic acid. 
A)  Most viruses are smaller than bacteria but bigger than mitochondria. 
B)  Viruses may be unicellular or multicellular. 
C)  Viruses have completely random shapes. 
D)  Viruses always cause death of the host cells they infect. 
E)  Virus are considered living because they contain nucleic acid.

Question 6

The work of Tyndall and Cohn

Accepted Answer

A)  supported the idea of spontaneous generation rather than the idea of biogenesis. 
B)  explained why some spontaneous generation investigators got different results from those of Pasteur. 
C)  showed that all microbes caused disease if they enter the human body. 
D)  allowed scientists to see microorganisms using a simple microscope. 
E)  showed that boiling fails to kill vegetative bacteria. 
A)  supported the idea of spontaneous generation rather than the idea of biogenesis. 
B)  explained why some spontaneous generation investigators got different results from those of Pasteur. 
C)  showed that all microbes caused disease if they enter the human body. 
D)  allowed scientists to see microorganisms using a simple microscope. 
E)  showed that boiling fails to kill vegetative bacteria.

Question 7

Select the FALSE statement regarding bacteria.

Accepted Answer

A)  They are found as rods, spheres, or spirals. 
B)  They reproduce by binary fission. 
C)  They contain a peptidoglycan cell wall. 
D)  They are found as single cells. 
E)  They are never photosynthetic. 
A)  They are found as rods, spheres, or spirals. 
B)  They reproduce by binary fission. 
C)  They contain a peptidoglycan cell wall. 
D)  They are found as single cells. 
E)  They are never photosynthetic.

Question 8

Select which of the following is the hypothesis being tested by the scientist.

Accepted Answer

A)  The newly isolated microbe can grow in the presence of lead. 
B)  The newly isolated microbe is a bacteria. 
C)  Lead can be placed into tubes of growth medium. 
D)  Bacteria must be incubated for 72 hours before they grow. 
E)  Lead is a good nutrient for all bacterial growth. 
A)  The newly isolated microbe can grow in the presence of lead. 
B)  The newly isolated microbe is a bacteria. 
C)  Lead can be placed into tubes of growth medium. 
D)  Bacteria must be incubated for 72 hours before they grow. 
E)  Lead is a good nutrient for all bacterial growth.

Question 9

Viruses simultaneously contain DNA, RNA, and protein.

Accepted Answer

A) True 
 B)False

Question 10

Cellulose is a major component of plants and is only directly digested by

Accepted Answer

A)  carnivores. 
B)  termites. 
C)  herbivores. 
D)  microorganisms. 
E)  birds. 
A)  carnivores. 
B)  termites. 
C)  herbivores. 
D)  microorganisms. 
E)  birds.

Question 11

An organism is categorized in a domain according to its cell size.

Accepted Answer

A) True 
 B)False

Question 12

Spontaneous generation refers to the idea that organisms came from other organisms.

Accepted Answer

A) True 
 B)False

Question 13

Which is usually NOT true of archaea?

Accepted Answer

A)  They move using flagella. 
B)  They reproduce by mitosis. 
C)  They contain rigid cell walls. 
D)  They are found as single cells. 
E)  They are prokaryotes. 
A)  They move using flagella. 
B)  They reproduce by mitosis. 
C)  They contain rigid cell walls. 
D)  They are found as single cells. 
E)  They are prokaryotes.

Question 14

Which is/are the correctly written name?

Accepted Answer

A)  Staphylococcus aureus 
B)  Staphylococcus a. 
C)  St. aureus 
D)  staph 
E)  Staphylococcus Aureus 
A)  Staphylococcus aureus 
B)  Staphylococcus a. 
C)  St. aureus 
D)  staph 
E)  Staphylococcus Aureus

Question 15

A scientist discovers a new species near coral reefs in Australia. He finds that this single-celled species is photosynthetic (using sunlight for energy), has a rigid cell wall structure with no peptidoglycan, uses a flagellum for motion, and contains a variety of internal structures that are membrane-bound. Given this information, this new species is most likely a(n) ________ cell in the ________ domain.

Accepted Answer

A)  bacterial; Eukarya 
B)  fungal; Prokarya 
C)  viral; Archaea 
D)  algal; Eukarya 
E)  protozoan; Bacteria 
A)  bacterial; Eukarya 
B)  fungal; Prokarya 
C)  viral; Archaea 
D)  algal; Eukarya 
E)  protozoan; Bacteria

Question 16

A new organism was found that was unicellular and 1 cm long. The "large" size of this organism alone would

Accepted Answer

A)  mean that it could not be a bacterium. 
B)  mean that it must be a protozoan. 
C)  not be useful in identification. 
D)  mean that it had to be in the domain Eukarya. 
E)  suggest that it is a virus. 
A)  mean that it could not be a bacterium. 
B)  mean that it must be a protozoan. 
C)  not be useful in identification. 
D)  mean that it had to be in the domain Eukarya. 
E)  suggest that it is a virus.

Question 17

Which group(s) below contain single-celled and multicellular organisms?

Accepted Answer

A)  Algae AND bacteria 
B)  Fungi AND archaea 
C)  Protozoa AND bacteria 
D)  Algae AND fungi 
E)  Fungi AND protozoa 
A)  Algae AND bacteria 
B)  Fungi AND archaea 
C)  Protozoa AND bacteria 
D)  Algae AND fungi 
E)  Fungi AND protozoa

Question 18

A scientist has two samples-the first is a prion sample, while the second is a viroid sample. However, the samples are in unlabeled tubes. The scientist wants to run a simple analysis to determine which tube contains the prion sample and which one contains the viroid. What type of molecule would she look for to do this?

Accepted Answer

A)  Lipids 
B)  DNA 
C)  Protein 
D)  Polysaccharides 
E)  Peptidoglycan 
A)  Lipids 
B)  DNA 
C)  Protein 
D)  Polysaccharides 
E)  Peptidoglycan

Exam 1: Humans and the Microbial World

Which of these scientists were involved in investigating the idea of spontaneous generation?

You explain to Janus that he may have an infection in his wound, possibly caused by the organism Staphylococcus epidermidis. You tell him that the genus name of the organism indicates that

Plants are dependent on microorganisms for

Which of these may pertain to the term strain?

Select the TRUE statement regarding viruses.

The work of Tyndall and Cohn

Select the FALSE statement regarding bacteria.

Select which of the following is the hypothesis being tested by the scientist.

Viruses simultaneously contain DNA, RNA, and protein.

Cellulose is a major component of plants and is only directly digested by

An organism is categorized in a domain according to its cell size.

Spontaneous generation refers to the idea that organisms came from other organisms.

Which is usually NOT true of archaea?

Which is/are the correctly written name?

A new organism was found that was unicellular and 1 cm long. The "large" size of this organism alone would

Which group(s) below contain single-celled and multicellular organisms?

The Molecules of Life

Microscopy and Cell Structure

Dynamics of Microbial Growth

Control of Microbial Growth

Microbial Metabolism: Fueling Cell Growth

The Blueprint of Life, From Dna to Protein

Bacterial Genetics

Biotechnology

Identifying and Classifying Microorganisms

The Diversity of Bacteria and Archaea

The Eukaryotic Members of the Microbial World

Viruses, Viroids, and Prions

The Innate Immune Response

The Adaptive Immune Response

Host-Microbe Interactions

Immunological Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Blood and Lymphatic Infections

Nervous System Infections

Genitourinary Tract Infections

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

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