Classification of Microorganisms

Question 1

mechanism to grow in a human host

Answer 1

Colonization

Question 2

mechanism to cause disease

Answer 2

Pathology

Question 3

Is the classification of organisms in an ordered system that indicates natural relationship

Answer 3

Taxonomy

Question 4

Three areas of bacterial taxonomy:

Answer 4

Identification, Classification, and Nomenclature.

Question 5

Isolate and distinguish specific organisms among the mix of complex microbial flora.

Answer 5

IDENTIFICATION

Question 6

categorization of organisms into taxonomic groups

Answer 6

CLASSIFICATION

Question 7

refers to the naming of an organism

Answer 7

NOMENCLATURE

Question 8

media rich in metabolic nutrients includes agar and carbon source as well as enzymes

Answer 8

Growth Media

Question 9

Media intended to cultivate as many species as possible

Answer 9

Non-Selective Media

Question 10

used to detect hemolysis (α, β, or y hemolysis)

Answer 10

Blood Agar

Question 11

Lysed blood (heated at 80°C); Used to isolate and cultivate fastidious organisms

Answer 11

Chocolate agar

Question 12

infection of the blood

Answer 12

Bacteremia

Question 13

infection of lungs

Answer 13

Pneumonia

Question 14

Media with the incorporation of an inhibitory agent that specifically selects against the growth of irrelevant bacteria

Answer 14

Selective media

Question 15

Agents of Selective Media

Answer 15

Sodium azide
Bile salts (sodium deoxycholate)
Colistin and nalidixic acid

Question 16

select for gram-positive bacteria over gram-negative bacteria

Answer 16

Sodium azide

Question 17

select for gram-negative enteric bacteria and inhibit gram-negative mucosal and most gram-positive bacteria

Answer 17

Bile salts

Question 18

inhibit the growth of many gram-negative bacteria

Answer 18

Colistin and Nalidixic acid

Question 19

Media containing bile salts and crystal violet; used to differentiate bacteria to ferment sugars other than lactose

Answer 19

MacConkey Agar

Question 20

Contains colistin and nalidixic acid; Developed by Ellner (1996); and is Selective for Staphylococci and Streptococci

Answer 20

CNA Blood Agar (Columbia Naladixic Acid )

Question 21

Differentiates between various kinds of bacteria; Also known as indicator media

Answer 21

Differential Media