WGU D311 Microbiology with Lab Section 2 Exam :Ecology and
Rhizosphere Interactions, Psychrophilic Microorganisms, Soil
Microbiology and Nematode Roles, Symbiotic Relationships
Mutualism Commensalism Parasitism, Resident Microbiota
Functions, Zoonotic and Nosocomial Diseases, Disease Transmission
Modes, Respiratory Droplet and Vector Transmission, Vertical
Transmission Mechanisms, Indirect Contact and Fomite Spread,
Carriers and Infection Control, Pathogen Entry and Adhesion
Mechanisms, Clinical Case Scenario Practice Exam Questions
Verified and Provided with Complete A+ Graded Answers Latest
Updated 2026
What is a characteristic of rhizospheres?
The rhizosphere is where plants release organic compounds that can be metabolized by
microbes into soil.
Which environment would contain microbes that are psychrophilic?
Glaciers
What is the role of nematodes in soil?
They prey on bacteria, smaller nematodes, fungi, and even plant roots.
Which eukaryote is responsible for producing antibiotics to ward off bacterial competitors?
, Fungi
Which symbiotic relationship is an example of mutualism?
The relationship between humans and the Escherichia coli colonizing the human gut.
Which type of symbiotic relationship exists between the E. coli that inhibit the human gut and
the humans who utilize the vitamin K produced by E. coli?
Mutualism
Describe resident microbiota.
Resident microbiota constantly live on the human body.
Which relationship is exhibited by intestinal E. coli and their human host?
Mutualism
Which type of disease is transmitted from animals to humans?
Zoonotic diseases
Which type of disease is acquired in hospital settings?
Nosocomial diseases
Rhizosphere Interactions, Psychrophilic Microorganisms, Soil
Microbiology and Nematode Roles, Symbiotic Relationships
Mutualism Commensalism Parasitism, Resident Microbiota
Functions, Zoonotic and Nosocomial Diseases, Disease Transmission
Modes, Respiratory Droplet and Vector Transmission, Vertical
Transmission Mechanisms, Indirect Contact and Fomite Spread,
Carriers and Infection Control, Pathogen Entry and Adhesion
Mechanisms, Clinical Case Scenario Practice Exam Questions
Verified and Provided with Complete A+ Graded Answers Latest
Updated 2026
What is a characteristic of rhizospheres?
The rhizosphere is where plants release organic compounds that can be metabolized by
microbes into soil.
Which environment would contain microbes that are psychrophilic?
Glaciers
What is the role of nematodes in soil?
They prey on bacteria, smaller nematodes, fungi, and even plant roots.
Which eukaryote is responsible for producing antibiotics to ward off bacterial competitors?
, Fungi
Which symbiotic relationship is an example of mutualism?
The relationship between humans and the Escherichia coli colonizing the human gut.
Which type of symbiotic relationship exists between the E. coli that inhibit the human gut and
the humans who utilize the vitamin K produced by E. coli?
Mutualism
Describe resident microbiota.
Resident microbiota constantly live on the human body.
Which relationship is exhibited by intestinal E. coli and their human host?
Mutualism
Which type of disease is transmitted from animals to humans?
Zoonotic diseases
Which type of disease is acquired in hospital settings?
Nosocomial diseases
