18 Questions
Which term refers to organisms that cause disease upon infection and are not normally associated with the host?
Primary pathogen
What was the first pathogen observed by scientists as described by Filippo Pacini in 1854?
Vibrio cholera
Which type of pathogen causes disease under certain conditions and can be members of the normal flora?
Opportunistic pathogen
Which of the following is an example of an opportunistic pathogen?
Candida albicans
What mode of transmission classifies pathogens based on food, air, water, blood, or vectors?
Transmission routes
Which organism is responsible for causing diseases like strep throat and tuberculosis?
Staphylococcus aureus
What is the term used to describe the ability of a pathogen to adhere to a host?
Adherence
Which factor plays a role in promoting disease formation by helping a pathogen to colonize a host?
Pathogenicity
What is the term that defines the degree of pathogenicity of a microorganism?
Virulence
Which ability of a pathogen is crucial for overcoming the host's defenses and leading to infection?
Adherence to host tissues
What characteristic increases the likelihood of disease occurrence in a host due to a pathogen?
High transmissibility
Which defense mechanism of a pathogen contributes to its ability to persist and infect a host?
Ability to evade host defenses
How do wounds in barrier epithelia contribute to pathogen colonization of the host?
They provide a direct pathway for pathogens to enter the host's interior.
Which of the following is NOT mentioned as a location where protective boundaries are less robust in the human body?
Skin
In what way can a pathogen efficiently cross the skin to infect a host?
By hitching a ride in the saliva of a biting insect
Why is adherence an essential step in bacterial pathogenesis?
To colonize a new host successfully
What feature enables viruses spread by insect bites to cause diseases like yellow fever?
Their ability to replicate in both insect cells and mammalian cells
Why do dedicated pathogens not need to wait for a well-timed wound to infect a host?
Because they can utilize strategies like hitching a ride in biting insects' saliva
Test your knowledge on host defences and how pathogens cross protective barriers to colonize the host. Questions cover natural barriers, non-specific and specific immune responses, and the role of skin and mucous membranes in protection.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
