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Questions and Answers
What is the definition of commensalism?
What is the definition of commensalism?
- One organism benefits and the other is not affected. (correct)
- Both organisms benefit from the association.
- Both organisms are harmed.
- Neither organism is affected.
Which of the following is an example of parasitism?
Which of the following is an example of parasitism?
- Both organisms benefit.
- Both organisms are unaffected.
- One organism is harmed. (correct)
- Neither organism is affected.
What are normal flora also known as?
What are normal flora also known as?
Microflora or microbiota.
The microbiome is fully established before birth.
The microbiome is fully established before birth.
What is the estimated number of bacterial cells in the human body?
What is the estimated number of bacterial cells in the human body?
What role does microflora play in the host defense?
What role does microflora play in the host defense?
Microflora can cause infections only when there is a balance in normal flora.
Microflora can cause infections only when there is a balance in normal flora.
The microbiota group that consists of fixed types of microorganisms is called ______.
The microbiota group that consists of fixed types of microorganisms is called ______.
Transient residents can be easily removed by routine ______.
Transient residents can be easily removed by routine ______.
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Study Notes
Commensalism
- A relationship between two organisms where one benefits and the other is neither harmed nor helped.
Parasitism
- A relationship between two organisms where one benefits at the expense of the other.
Normal Flora
- Also known as microbiota or microflora.
Microbiome Development
- The microbiome is not fully established before birth, it continues to develop throughout life.
Bacterial Cell Count
- The estimated number of bacterial cells in the human body is 10 times higher than human cells.
Microflora Role in Host Defense
- Microflora plays a crucial role in host defense by competing with pathogens for resources and space, preventing colonization by harmful microorganisms.
Microflora and Infections
- Microflora can cause infections when there is an imbalance in normal flora, leading to opportunistic infections by normally harmless bacteria.
Fixed Microbiota
- The microbiota group that consists of fixed types of microorganisms is called resident microbiota.
Transient Residents Removal
- Transient residents can be easily removed by routine hygiene practices, such as washing hands.
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