Exam 35: Pathogenicity and Infection

Fever response can be triggered by an endogenous pyrogen called interleukin-1.

Bacteria within biofilms exchange

A __________ is an organism that transfers pathogens from one host to another.

Which of the following has no effect on the outcome of the host-parasite relationship?

While exotoxin production is most generally associated with gram-positive bacteria,some Gram-negative bacteria also produce exotoxins.

A neutralizing antibody against a toxin is called a(n)__________.

An __________ pathogen can cause disease in a host with impaired resistance.

Once a pathogen has infected the host,__________________ is a measure of the pathogen's ability to spread to adjacent or other tissues.

Any organism that can cause disease in the host after direct interaction is a

The only organisms to produce endotoxins are gram-negative bacteria.

If a symbiont either harms or lives at the expense of another organism,the relationship is called

Endotoxin is released when

Pathogenicity islands are typically associated with

Because LPS is bound to the surface of bacteria,it is called a(n)__________.

The term __________ refers to the degree or intensity of pathogenicity.

Transfer of pathogens from host to environment and then to another host are said to be transmitted _________.

Colonization specifically refers to the multiplication of a pathogen on or within a host,and includes the resulting tissue invasion and damage.

Vector-borne transmission can be either external or internal.In external (mechanical)transmission,the pathogen is carried

Listeria monocytogenes propels itself through mammalian host cells using:

Which of the following is not a biological effect associated with endotoxin?