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- 1. Multiple Choice
All Enterobacteriaceae reduce nitrates to nitrites
except: Erwinia, Pantoea agglomerans, Photorhabdus, and Xenorhabdus.
true
false
- 2. Multiple Choice
All enterobacteriaceae are facultative aerobe, non-spore-forming Glucose fermenters .
true
false
- 3. Multiple Choice
All enteric bacteria are catalase positive except for one group of Salmonella species and Xenoharbus.
true
false
- 4. Multiple Choice
Salmonella/Escherichia/Shigella species cannot be separated into different serotypes because they have the same antigens found on their surface.
true
false
- 5. Multiple Choice
Serotyping is determined by the agglutination of bacteria with specific antisera to identify variants of O and H antigens.
true
false
- 6. Multiple Choice
K antigen is the Capsular antigen
true
false
- 7. Multiple Choice
Adenylate cyclase enzyme catalyzes the transformation of ATP to cyclic adenosine monophosphate (cAMP), leading to a decrease in cyclic adenosine monophosphate (cAMP) level.
true
false
- 8. Multiple Choice
The decreased levels of cAMP stimulate the intestinal cells to hyper secret fluids and electrolytes into the lumen of the intestine resulting in watery diarrhea .
true
false
- 9. Multiple Choice
Enteroinvasive E.coli has a higher infective dose than Shigella .
true
false
- 10. Multiple Choice
The 3 symptoms of HUS include thrombocytopenia, microangiopathic hemolytic anemia, and kidney failure.
true
false
- 11. Multiple Choice
K. pneumoniae has a polysaccharide capsule which is responsible for the mucoidal colonies.
true
false
- 12. Multiple Choice
Salmonella, Shigella, Escherichia can tolerate KCN.
true
false
- 13. Multiple Choice
Enterobacter is inhibited by KCN.
true
false
- 14. Multiple Choice
Fish eye colonies are produced by Enterobacter spp on EMB.
true
false
- 15. Multiple Choice
Hafnia is differentiated from Serratia because it is DNAse and Lipase positive.
true
false
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