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Med physiology - Quiz 1 > Bacteria > Flashcards

Flashcards in Bacteria Deck (44)
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1

Define communicability

The ability to spread from one individual to others

2

Name a disease with high communicability. And low communicability.

Measles - High
HIV - Low

3

Define Immunogenicity

The ability of pathogens to induce an immune respone

4

Define infectivity

The ability of the pathogen to invade and multiply in the host

5

Define Mechanism of Action

How microogranisms damage tissues

6

Define Pathogenicity

The ability of an agent to produce disease

7

Define portal of entry

The route by which a pathogenic microorganism infects the host

8

Define Toxigenicity

The ability of a pathogen to poduce soluble toxins or endotoxins

9

Define Virulence

The capacity of a pathogen to cause severe disease

10

Name a disease with low virulence and high virulence

Measles - Low
Rabies - High

11

Define Symbiosis

Benefits only the human; no harm to the microorganism

12

Define Mutualism

Benefits the human and the microorganism

13

Define Commensalism

Benefits the microorganism; no harm to the human

14

Define Pathogenicity (Relationship between pathogen and human)

Benefits the microorganism; harms the human

15

Define opportunism

A situation in which benign microorganisms become pathogenic because of decreased human resistance

16

Name one common microorganism that uses opportunism to become pathogenic

C. Diff

17

Coccus bacteria are _____ in shape.

Spherical

18

Staphylococci are arranged in _________.

Clusters

19

Streptococci are arranged in __________.

Chains

20

Bacillus bacteria are ________ shaped.

Rod

21

Other than bacillus and coccus shaped bacteria, the 3rd shape of bacteria is _______.

Spiral

22

What are the three biochemical and growth characteristics of bacteria.

1. Type of culture media
2. Oxygen Requirements
3. Nutritional requirements

23

Aerobic organism grow best in ___________.

The presence of O2

24

Anaerobic organisms grow best in the _________.

Absence of O2

25

Facultative Anaerobes grow _________

equally well with or without O2.

26

What is an antigen?

Your cells have coded this as "not you"

27

Where are antigens found?

On bacteria

28

Normal flora create a ________, which make it ________ for pathogens to _______.

layer of molecules
difficult
penetrate

29

Normal flora work well by creating a higher _______________ (THINK ratio)

Surface-to-volume ratio

30

A fecal transplant works by re-establishing _________.

normal flora layer