5 Questions
What is the relationship between commensal bacteria and the host?
Mutualism
What is the main characteristic of non-pathogenic bacteria?
They live on external or internal surfaces without causing disease
Which type of bacteria obtain nutrients from living hosts, causing them harm?
Pathogenic bacteria
What do saprophytic bacteria obtain food from?
Dead or decaying organic matter
Which type of bacteria live freely in nature and obtain food from dead or decaying organic matter?
Saprophytic bacteria
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.
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.
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