Podcast
Questions and Answers
What is the role of normal flora in the human body?
What is the role of normal flora in the human body?
- Causing illness or death
- Always symptomatic
- Replacing the role of the immune system
- Limited to certain areas of the body, never causing trouble (correct)
What is a characteristic of dedicated pathogens?
What is a characteristic of dedicated pathogens?
- They cause symptoms immediately after infection
- They can only multiply in a host with a weak immune system
- They require the host to be immunocompromised or injured
- They have developed highly specialized mechanisms to evade the host's immune responses (correct)
What are the necessary steps for a successful pathogen to survive and multiply in a host?
What are the necessary steps for a successful pathogen to survive and multiply in a host?
- Colonize, find a nutritionally compatible niche, avoid the host's immune responses, replicate, and exit to spread to a new host (correct)
- Always cause disease to survive and multiply
- Only evade the host's immune responses and replicate
- Only colonize the host and replicate
Why might pathogens evolve to cause disease?
Why might pathogens evolve to cause disease?
What is an example of how pathogens can spread efficiently?
What is an example of how pathogens can spread efficiently?
What can be learned by studying pathogens?
What can be learned by studying pathogens?
Why do many microorganisms find a human host to be an attractive environment?
Why do many microorganisms find a human host to be an attractive environment?
What is the main reason mentioned in the text for why pathogens and parasites attack our bodies?
What is the main reason mentioned in the text for why pathogens and parasites attack our bodies?
How many microbial species live within the human body?
How many microbial species live within the human body?
What are some common features that microorganisms must possess to be infectious?
What are some common features that microorganisms must possess to be infectious?
Why is it stated in the text that every living organism on Earth might be subject to some type of infection or parasitism?
Why is it stated in the text that every living organism on Earth might be subject to some type of infection or parasitism?
What makes the human body a suitable environment for many microorganisms to survive and reproduce?
What makes the human body a suitable environment for many microorganisms to survive and reproduce?
