Exam 23: Microbial Interactions With Humans

The following bacterial species are all implicated in dental caries EXCEPT

Why is fever the universal result of endotoxin exposure?

Describe the difference between the use of streptokinase and coagulase as a defense mechanism among pathogens.

Which disease CANNOT be prevented via the use of a vaccine generated from an attenuated pathogen?

Cholera begins following a bite from a mosquito.

Which of the following are NOT found in the gastrointestinal tract of healthy humans?

Following antibiotic therapy,patients are often administered ________ to facilitate recolonizaton of normal flora.

The decrease or loss of virulence of a pathogen is referred to as

The upper respiratory tract usually has a considerable amount of resident microflora in a healthy adult.

Clostridium botulinum are endospore-forming bacteria normally found in the soil.

What is the difference between pathogenic and non-pathogenic E.coli in relation to the human host?

Explain how Clostridium tetani cells that rarely leave their initial site of infection can cause death in their hosts.

The process by which microorganisms cause diseases is known as

Hormones that are produced under stress boost normal immune responses and play a role in stress-mediated disease resistance.

Which of these microorganisms is MOST likely to be found in the human gut?

ALL microorganisms that live in the human body are harmful.

Virulence refers to the ability of an organism to cause disease.

Virulence is the relative ability of a ________ to cause disease.

Cytolytic toxins

Siderophores from some pathogens remove iron from the host protein(s)