Chapter 15 Microbial Mechanisms of Pathogenicity

Question 1

The ability to cause disease

Answer 1

Pathogenicity

Question 2

The degree of pathogenicity

Answer 2

Virulence

Question 3

What are the different portals of entry?

Answer 3

Mucous membranes
Skin
Parenteral Route

Question 4

Infectious does for 50% of a sample population and measures the virulence of a microbe

Answer 4

ID50

Question 5

A lethal dose for 50% of a sample population and measures potency of a toxin

Answer 5

LD50

Question 6

What is the process of adherence?

Answer 6

when pathogens attach to host tissues

Question 7

Bind to receptors on the host cells

Answer 7

Adhesins (ligands)

Question 8

Streptococcus pneumonia

Answer 8

pneumonia

Question 9

Haemophilu influenza

Answer 9

pneumonia and meningitis

Question 10

Bacillus anthraces

Answer 10

anthrax

Question 11

Yersinia pestis

Answer 11

plague

Question 12

Examples of adhesins

Answer 12

Glycocalyx, fimbraiae

Question 13

Has a glycocalyx around the cell wall

Answer 13

Capsules

Question 14

Is able to resist phagocytosis

Answer 14

M protein (s. pyogenes)

Question 15

A protein that allows attachment to host cells

Answer 15

Opa (n. gonorrheae)

Question 16

A lipid that resists digestion

Answer 16

Waxy lipid (m. tuberculosis)