Bacteria

Question 1

Obligate aerobes

Answer 1

Require O2 to survive

Question 2

Facultative anaerobe

Answer 2

Prefer O2 but can survive in anaerobic conditions

Question 3

Obligate anaerobes

Answer 3

Cant live in O2

Question 4

Give some examples of areas in the body that an anaerobic bacteria might live

Answer 4

1. GI tract

2. Mucosal membranes of the nose, mouth, and sinus cavities

Question 5

What will anaerobic bacterial abscesses look like

Answer 5

Will have gas in the abscess, foul odor, and necrotic tissue

Question 6

Examples of anaerobic bacteria

Answer 6

Clostridiu (c.diff)
Fusobacterium
Bacteroides
Actinomyces

Question 7

Subtype

Answer 7

Organisms that form a type within a larger group

Question 8

Why would you use subtyping

Answer 8

To track outbreaks and understand how to treat

Question 9

Normal flora of the skin

Answer 9

Staph

Question 10

Normal flora of the nares

Answer 10

Coagulase negative staph and corynebacteria

Question 11

Normal flora of the nasopharynx

Answer 11

Streptococci and neisseria species. s.pyogenes

Question 12

Normal flora of the mouth

Answer 12

streptococci, lactobacilli, staph, corynebacteria

Question 13

Normal flora of the GI

Answer 13

Enterobacteria

Question 14

Normal flora of the genitalia

Answer 14

Corynebacteria, staph, strep, e.coli, lactobacilli

Question 15

Normal flora of the conjunctiva

Answer 15

Coagulase negative staph

Question 16

Normal flora of the bladder

Answer 16

Coagulase negative staph, enterococcus, viridans streptococci

Question 17

Endotoxins

Answer 17

A component of the cell wall of a gram- bacteria. Lipid A

Question 18

Exotoxins

Answer 18

Proteins produced by bacteria that harmful effects on infected tissue

Question 19

What are examples of endotoxin infections

Answer 19

1. Septic shock
2. Septicemia - neisseria menigitidis
3. Meningtis

Question 20

Virulence

Answer 20

Power of organism to produce disease

Question 21

Pathogenicity

Answer 21

Ability of a pathogen to cause disease

Question 22

Infectious dose

Answer 22

Min. amount of exposure required to cause disease

Question 23

Lethal dose

Answer 23

min. amount of exposure required to be fatal to organism

Question 24

Types of virulence factors

Answer 24

1. Capsulation
2. Exotoxins
3. Endotoxins

Question 25

Antigenic switching

Answer 25

Ability of pathogen to change surface antigens, turning on or off expression genes