21. Principles of Disease

Scientists commonly call humans 'superorganisms'. What is this description referring to?

a) Humans are the most intelligent and influential organisms on the planet.

b) Each human is an ecosystem for trillions of microorganisms.

c) Humans are the only organisms that determine the success of other organism species.

d) Each human is host to a unique species of microorganism.

Which of the following answers does not include an example of transient microbiota?

Which of the following influences the types and amounts of microorganisms found in and on your body?

Recent research suggests that babies born via cesarean section are more at risk for developing allergies. Why might this be?

Following is a list of fungi, their methods of entry into the body, and sites of infections they cause. Categorize each type of mycosis as cutaneous, opportunistic, subcutaneous, superficial, or systemic.

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NAME IT Identify the structures of this eukaryote, which has an affinity for keratin.

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Why are some organisms that constitute the normal microbiota described as commensals, whereas others are described as mutualistic?

This microbe is acquired by humans as infants and is essential for good health. Acquiring a closely related strain causes severe stomach cramps, bloody diarrhea, and vomiting. What is the microbe?