GRAM - BACTERIA

Question 1

the only gram - cocci is ____

Answer 1

neisseria

Question 2

neisseria meningitis can ferments glucose and maltose (T/F)

Answer 2

trueee

Question 3

what neisseria gonorrohea fements ?

Answer 3

glucose

Question 4

two types of neisseria :

Answer 4

gonorrhea

meningitis

Question 5

2 types of aerobe bacilli is

Answer 5

bordetella

heamophilus

Question 6

obligate aerobe bacili is

Answer 6

pseudomonas (green pigments)

Question 7

facultative bacili types include :

Answer 7

lactose fermenter - ecoli
capsule
non lactose fermenter -
salmonella (typhoid)
shingels (dysentary)
proteus (UTI)

Question 8

neisseria meningitits virulence factors ?

Answer 8

polysaccharide capsule leads to meningitis

asymptomatic normal flora in body

Question 9

neisseria gonorrohoe virulence factors ?

Answer 9

pili adhere , antiphagocytic

hv outer membrane proteins

Question 10

neisseria gonorrohoe is sexually transmitted what is the diseases ?

Answer 10

urethritis,pelvic inflammatory disease in women

opthalia neonatal, conjuctivitis

Question 11

rifampin , penicilin G , vaccine is used to treat ?

Answer 11

meningitis by neisseria meningitis

Question 12

gram + diploccoci ?

Answer 12

s. viridins

s. pneumonia

Question 13

salmonella typhi cause what disease?

Answer 13

thyphoid fever/enteric fever that spread in animal to human

Question 14

salmonella typi and paratypi ABC can be cultured in ?

Answer 14

macconkey : colourless

wilson blair bismuth sulphide produce black colonies

Question 15

o antigen virulence factor of salmonella is _____ immunogenic than H antigen

Answer 15

less it act llike endotoxin and unaffected y boiling (heat stable)

Question 16

Vi antigen is polysaccharide what its fx

Answer 16

prevents agglutination, destroy after boiling at 6oc

Question 17

protects the bacilli against phagocytosis and poorly immunogenic what its virulence factor

Answer 17

Vi antigen

Question 18

rashes in typhoid located at ?

Answer 18

front of chest that loook like rose spots irregular blanching pink maculae

Question 19

pathology of salmonella

Answer 19

enter thru ingestion
attach to microvili
penetrate lamina propria and sub mucosa
phagocytosis by polymorphes, macrophages
enters mesenteric lymph nodes
enter the throcic duct-blood stream
enters kidney gallbladder liver GIT cause necrosis
typhoid ulcer occurs

Question 20

salmonella gastroenteritis is nontyphoidal salmonella what is the symptoms?

Answer 20

abdominal pain mucous , bloody diarrhea, vomitting

Question 21

e coli can be transmitted thru

Answer 21

fecal-oral strains

Question 22

4 types of pathogenic strains
HP - large intestine
IT -small intestine

Answer 22

enterohaemorrhagic e coli (EHEC) -large intestine
enterotoxigenic e coli (ETEC) - small intestine
enteroinvasive e coli ( EIEC) - large intestine
enteropathogenic e coli (EPEC) -small intestine

Question 23

EHEC produce cytotoxins that disrupt protein synthesis within host cellsn, what is the toxxin called?

Answer 23

verocytotoxin (form attaching and effacing lessions on epithelial cells), shinga like toxin

Question 24

what is EHEC complications ?

Answer 24

haemolytic uremic syndrome

Question 25

ETEC disease includes ?

Answer 25

travelers diarrhoea , watery diarrhae, nausea, headache

Question 26

colonization factor antigens in small intestine is virulence factor of _____

Answer 26

enterotoxigenic e coli (heat stable , heat labile)

Question 27

EIEC charaterictis is

Answer 27

ability to induce entry into epithelial cells and disseminate from cell to cell

Question 28

EIEC mot

Answer 28

contaminated food / water or thru mechanical factors

Question 29

how EIEC cause dysentery ?

Answer 29

organism invade the epithelial cells during ingestion

Question 30

EPEC diseases

Answer 30

watery diarhea or bloody

Question 31

EPEC pathogenesis mechanism

Answer 31

involve formation of attaching and effacing lesions followed by interference with host cell signal transduction

Question 32

what bacteria resitant to multiple drugs ?

Answer 32

pseudomonas aeruginosa (gram - rods motile obligate aerobe )

Question 33

pseudomonas aeruginosa can be from ____

Answer 33

infected wound, burns, nails, nnecrotizing pneumoniae ,corneal ulcer, otitis externa, urinary tract

Question 34

greenish blue colonies and sweet odor of p. aeruginosa is from ______

Answer 34

pyocyanin -nonfluroscent bluish pyoverdin -fluorescent greenish pyorubin, pyomelanin - hv polyssacharide capsule

Question 35

vibrio cholera virulence factors

Answer 35

flagellum (H antigen) mucinase -digest mucous layer to attach to cells fimbriae -helps w attachment to other cell noninvasive

Question 36

clinical manifestation of vibrio cholera

Answer 36

cholera - diarhrea w rice water stool no pus muscle cramps circulatory shock/collapse

Question 37

vibrio cholera can be transmitted thru fecal oral and can ferments sugar except

Answer 37

lactose

Question 38

helicobacter pylori virulence factor :

Answer 38

adhesins- fimbriae enzymes - urease, protease, cytokines toxins -cytoxins