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Medical Microbiology Chapter 7 Quiz

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Questions and Answers

What is the relationship between commensal bacteria and the host?

Predation

Competition

Parasitism

Mutualism (correct)

What is the main characteristic of non-pathogenic bacteria?

They can multiply in the host tissue causing disease

They obtain food from dead or decaying organic matter

They live on external or internal surfaces without causing disease (correct)

They require a living host to obtain nutrients

Which type of bacteria obtain nutrients from living hosts, causing them harm?

Commensal bacteria

Non-pathogenic bacteria

Pathogenic bacteria (correct)

Saprophytic bacteria

What do saprophytic bacteria obtain food from?

<p>Dead or decaying organic matter</p> Signup and view all the answers

Which type of bacteria live freely in nature and obtain food from dead or decaying organic matter?

<p>Saprophytic bacteria</p> Signup and view all the answers

Study Notes

Bacteria-Host Relationships

Commensal bacteria live on or in the host without causing harm or benefit.
Non-pathogenic bacteria do not cause disease in the host and are harmless.

Types of Bacteria

Parasitic bacteria obtain nutrients from living hosts, causing them harm or disease.
Saprophytic bacteria obtain food from dead or decaying organic matter.

Note: These notes focus on the key facts and relationships between bacteria and hosts, as well as the characteristics of different types of bacteria.

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Description

Test your knowledge of Chapter 7: Host-Parasite Relationship and Bacterial Nutrition from the course EDPT 211, taught by Prof. Dr. Noha Mohammed Afifi at Qassim University's College of Medical Rehabilitation.