25 Questions
What is the term for microorganisms that cause disease and are transmitted to the host from an environmental source?
Environmental pathogen
Which type of pathogen requires significant impairment of the host’s immunity to cause disease?
Opportunistic pathogen
What is the term for microorganisms that are colonizers or pathogens of animals and can be transmitted to humans?
Zoonotic pathogen
Which of the following is an example of an environmental pathogen?
Clostridium tetani
What is the interaction between a microbe and its host referred to as?
Microbe-host relationship
How can pathogens enter the host?
Through the skin, mucosa or body’s orifices
What is a characteristic of obligate pathogens?
They require a host to multiply and survive
What is the outcome of exposure to an infectious agent if a person does not develop disease?
Exposure without infection
What is the purpose of Koch’s postulates?
To identify the causative agent of a disease
Which of the following is a limitation of Koch’s postulates?
They do not account for asymptomatic carriers
What type of microorganism is capable of causing disease but can also multiply in the environment?
Facultative pathogen
Which type of microbe-host relationship is characterized by a mutual benefit for both the microbe and the host?
Commensalism
What is the term for a microorganism that is a normal inhabitant of the animal body and can cause disease in normal hosts with some regularity?
Commensal pathogen
Which type of pathogen must produce disease to transmit and survive evolutionarily?
Obligate pathogen
What is the term for a microorganism that can live and thrive in the environment without the need for a host?
Free-living microorganism
What is the term that refers to the study of the cause of disease?
Etiology
Which scientist is credited with discovering the bacteria responsible for anthrax, tuberculosis, and cholera?
Robert Koch
Which of the following is a mode of transmission of disease?
Direct or indirect transmission
Who is credited with first observing microorganisms in the 1670s?
Antonie van Leeuwenhoek
What is the term for a microorganism that is invisible to the naked eye?
Microbe
What is an infection?
The invasion of pathogens in an individual or population
What are the five stages of an infectious disease?
Incubation, prodromal, illness, decline, and convalescence
What is a limitation of Koch’s postulates?
All of the above
What is infectious disease?
Disease caused by pathogens
What is the term for the interaction between a microbe and its host?
Pathogen-host interaction
Learn about the different types of pathogens, including opportunistic pathogens, and their relationship with the host. Understand how environmental pathogens are transmitted and how they cause disease.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
