12 Questions
What is the role of normal flora in the human body?
Limited to certain areas of the body, never causing trouble
What is a characteristic of dedicated pathogens?
They have developed highly specialized mechanisms to evade the host's immune responses
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
Why might pathogens evolve to cause disease?
To facilitate their spread or propagation and hence have a selective advantage
What is an example of how pathogens can spread efficiently?
Through direct contact during sexual activity
What can be learned by studying pathogens?
Cell biology and the biology of their host organisms
Why do many microorganisms find a human host to be an attractive environment?
It provides an abundant supply of nutrients.
What is the main reason mentioned in the text for why pathogens and parasites attack our bodies?
To live and reproduce.
How many microbial species live within the human body?
Thousands of microbial species
What are some common features that microorganisms must possess to be infectious?
Ability to survive and reproduce in a host
Why is it stated in the text that every living organism on Earth might be subject to some type of infection or parasitism?
Because living within a host provides a desirable niche for microorganisms
What makes the human body a suitable environment for many microorganisms to survive and reproduce?
Abundance of essential nutrients and a warm, moist environment
Explore the world of pathogens and parasites, and how they thrive in their hosts. Learn about the benefits of parasitism and how it's a common strategy in the natural world. Discover how human bodies provide an ideal environment for pathogens to live and reproduce.
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