Lecture 18 - Ch 27 - Microbial Interactions with Humans Flashcards Preview

Microbiology - Biol3880 > Lecture 18 - Ch 27 - Microbial Interactions with Humans > Flashcards

Flashcards in Lecture 18 - Ch 27 - Microbial Interactions with Humans Deck (12)
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1

Microorganisms usually found associated with human body tissue

normal microbial flora

2

The decrease or loss of virulence

attenuation

3

Organism causes disease by means of a toxin that inhibits host cell function or kills host cells

toxicity

4

Ability of a pathogen to grow in host tissue at densities that inhibit host function

Invasiveness

5

Proteins released from the pathogen cell as it grows

exotoxins

6

what are the 3 types of exotoxins?

Cytolytic toxins
AB toxins
Superantigen toxins

7

which type of toxins are responsible for cell lysis?

Type II - membrane disrupting toxins

8

which type of toxins use enzymatic activity?

Type III - A-B Toxins

9

What are type I toxins?

Superantigens

10

What is an example of a superantigen?

Toxic Shock Syndrome (from Staphylococcus aureus)

11

What is the name of the endotoxin?

lipopolysaccharide (LPS)

12

Where do endotoxins attach to a cell?

the membrane of Gram (-) bacteria