Bacterio5

Question 1

Neisseria meningitidis aka …….. , where ……. have it part of there NF , (capsulated/not), trasmitted thru…..
It causes …. one step before ….

Answer 1

Meningococci
30%
Capsulated
Respiratory droplets (URT)
Meningitis
Encephalitis

Question 2

T or F

N.mening are found manly in crouded areas like army camps and nursing homes

Answer 2

True

Question 3

How to detect presence of N menin ?

Answer 3

Extraction of csf

Treatment with antibodies (agglutination test)

Question 4

Target cells of N.meningitidis?

Is it invasive or not?

Answer 4

Non-ciliated columnar cells of nasopharynx

N.mening are invasive bacteria

Question 5

The very severe disease caused by N.mening followed by —– is called…..
Also cause skin infections called ——— and they are ——–

Answer 5

Sepsis
Meningococcemia
Petechial rash or macculopapular
Non blanching

Question 6

Virulence factors for N.mening;
1-
2-
3-

Answer 6

1-capsule
2-pilli
3-LOS

Question 7

Symptoms of meningitis

Answer 7

High temp
Vomiting
Headache
Photophobia
Stiff neck

Question 8

T or F

N.mening have resistance to antibiotics more than N.gonno

Answer 8

False

Question 9

Moraxella catarrhalis causes in children…… while in adults…… especially in …… patients, it’s treated by ……

Answer 9

• children : otitis media and sinusitis
• adults: bronchitis and pneumonia
• complete obstructive pulmonary disease (COPD)
• cephalosporins

Question 10

Kingella kingae: causes ……(Like all HACEK bacteria) and in children causes …… , and it’s …….. so we can’t culture

Answer 10

• endocarditis
• osteomyelitis
• fastidious

Question 11

T or F

Enterobacteriacea are gram neg, and most of them are lactose fermenters

Answer 11

True

Question 12

…….and ……. are culture media specific for enterobacteriaceae

Answer 12

MacConkey

EMB

Question 13

Bloody and mucoid diarrhea is called……

Answer 13

Dysentery

Question 14

Tenesmus is a case where…..

Answer 14

Need to pass stooll despite rectum being empty (hypersensitivity of the nerve to injury at site of infection)

Question 15

T or F

The presence of E.coli shows that there is a feces contamination

Answer 15

True

Question 16

What are the steps to detect an enteric bacteria?

Answer 16

1- fermentation, gas production and dye colorization
2-EMB and temperature variability (were ecological bacteria can’t grow on hight tempratures)
3-repeat the process to make sure

Question 17

What do they mean by;
O antigen
K antigen
H antigen
Vi

Answer 17

O: for lipopolysaccharides
K: for capsule
H: for flagella
Vi for capsule of salmonella

Question 18

List the 3 domains where E.coli can be present

Answer 18

1- commensals: NF non pathogenic
2- intestinal pathogens: probably acquired the virulence factor outside the human
3- extraintestinal: that cause UTIs (most common cause in young women)

Question 19

E.coli takes a ………. appearance on EMB agar

Answer 19

Green sheen metallic

Question 20

List the E.coli types of bacteria that causes diarrheal diseases and the type of diarrhea each causes

Answer 20

EPEC (watery)
ETEC (watery)
EHEC (bloody)
EIEC (dysentery)
EAEC (persistent in children)

Question 21

Which type of E.coli releases the shega-like verotoxin

Answer 21

EHEC

Question 22

T or F

EPEC and EIEC causes fever because they are invasive

Answer 22

False

EPEC don’t

Question 23

Klebsiella pneumoniae, only ….. of uumans have it as NF, (lactose fermenter/not)……., (capsulated or not)……, makes a lot of pus and ….

Answer 23

5%
Lactose fementer
Capsulated
Sputum

Question 24

T or F

Klebsiella pneumonia can make a UTI in all cases

Answer 24

False

Only in nocosomial settings

Question 25

Pneumonia caused by klebsiella is CAP found in a special case which is in --------

Answer 25

Alcoholics

Question 26

T or F | Pneumona caused by klebsiella can be hemorrhagic

Answer 26

True

Question 27

Enterobacter aerogenes are found mostly on ....... even on IV fluids, treated with .....

Answer 27

Instruments of the hospitals | 4th GC

Question 28

T or F | Serratia marcesens are not opportunistic as klebsiella and can cause pneumonia and endocarditis

Answer 28

False | They are opportunistic

Question 29

T or F | Serratia marcescens can't cause UTIs

Answer 29

False

Question 30

Serratia marcescens are common that are ...... addicts

Answer 30

Narcotic ( opiate)

Question 31

T or F | Proteus mirabilis have a variability in shape

Answer 31

True

Question 32

T or F | Proteus mirabilis can cause UTIs

Answer 32

True

Question 33

...... occurs with kidney stones,it causes also the release of ammonia and it's urease(+/-)-------

Answer 33

Proteus mirabilis | Urease potsitive

Question 34

Salmonella is part of enterobacteriaceae but it's ..........(regarding fermentation), (pathogenic/not)........., found mostly in (developed or developing)........ countries, transmitted through ......

Answer 34

Not lactose fermenters Always pathogenic Developed (related to hygiene and contamination) Fecal oral route ( ingestion)

Question 35

Enterobacteriacea have a -------- shape, grows on ------ and emb agars that are comparable to -------- agar. When fermentors are placed on these agars the colors turn ------. Coliforms are -------- NF Hemorrhagic E.coli are (invasive/non)--------

Answer 35

``` Coccobaccilli Macckokey Blood Rose to pink Intestinal Nf Invasive ```

Question 36

Proteus mirabilis is characterized by it's ------- activity

Answer 36

Swarming