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Host-Parasite Relationship: Basic Terms

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Questions and Answers

What is the difference between resident microbiota and transient microbiota?

Resident microbiota are fixed types found in a given area and transient microbiota are constantly changing (correct)

Resident microbiota are pathogenic while transient microbiota are nonpathogenic

Resident microbiota are derived from the environment while transient microbiota are part of the normal microbiota

Resident microbiota inhabit the skin for hours, days, or weeks while transient microbiota are regularly found in a given area at a given age

Which term describes a microorganism that does not cause disease and may be part of the normal microbiota?

Microbiota

Pathogen

Nonpathogen (correct)

Opportunistic pathogen

When does an opportunistic pathogen cause disease?

When the microorganism is part of the normal microbiota

When the patient is immunocompromised (correct)

When the host has strong resistance

When the microorganism causes a transient infection

What is the purpose of standard precautions?

To prevent transmission of pathogens from one person to another Signup and view all the answers

Which of the following is an example of standard precautions?

Wearing personal protective equipment like gloves and gowns Signup and view all the answers

What is the role of epidemiology in studying diseases?

To collect and analyze data about infected people Signup and view all the answers

When are transmission-based precautions applied?

Only in individuals with known or suspected highly transmissible infections Signup and view all the answers

Which of the following is NOT one of Koch's Postulates for establishing the cause of a disease?

The pathogen must produce symptoms or changes in body function in the infected person Signup and view all the answers

Why is Treponema pallidum considered an exception to Koch’s Postulates?

It has unique culture requirements and has never been cultured on artificial media Signup and view all the answers

What distinguishes a communicable disease from a noncommunicable disease?

Communicable diseases always spread from one host to another Signup and view all the answers