Chapter 2

Question 1

Microbiome

Answer 1

Microbes that are found in a given habitat and the environment they inhabit

Question 2

Typical sites of normal bacteria

Answer 2

Skin
Respiratory tract
Digestive tract
Genitourinary system

Question 3

Where is there no normal bacteria?

Answer 3

Blood
CSF
Synovial fluid
Deep tissues

Question 4

Colonization resistance

Answer 4

host and bacteria cooperate to protect against invaders

Question 5

Tissue tropism

Answer 5

preference of bacteria to one site of the body

Question 6

5 roles of normal microbiota

Answer 6

Immune stimulation
Keeping out invaders
Nutrition and metabolism
Conversion of ingested compounds
Common sources of infection

Question 7

Bacteriocins

Answer 7

lethal proteins

Question 8

Butyrate

Answer 8

Short chain fatty acid
Produced by anerobic microbial metabolism

Question 9

4 normal bacteria in skin

Answer 9

Staph
Corynebacterium
Propionibacterium acnes
Enteric bacilli

Question 10

6 normal bacteria in oropharynx

Answer 10

alpha hemolytic strep
Micrococcus
Corynebacterium
Neisseria
Haemophilus
Spirochetes

Question 11

5 normal bacteria in the large intestine

Answer 11

Strep
Lactobacillus
Clostridium
Bacteroides
Enteric Bacilli

Question 12

4 normal bacteria in the vagina

Answer 12

Strep
Lactobacillus
Bacteroides
Mycoplasma