Gram (-) Rods

Question 1

This Gram (-) rod is aerobic, grows on MacConkey, lactose fermenting, and tests negative for citrate, urease, and oxidase

Answer 1

E. coli

Question 2

This Gram (-) rod is aerobic, grows on MacConkey, lactose fermenting, and citrate negative but urease positive

Answer 2

Enterobacter aerogenes

Question 3

This Gram (-) rod is aerobic, grows on MacConkey lactose fermenting, and citrate positive and urease positive

Answer 3

Klebsiella

Question 4

How does one distinguish between Klebsiella pneumonia and Klebsiella granulomatis?

Answer 4

K. pneumoniae: alcoholics, causes pneumonia and UTI

K. granulomatis: donovan bodies, std, granuloma inguinaie

Question 5

This Gram (-) rod is aerobic, grows on MacConkey, is lactose non-fermenting, and oxidase positive

Answer 5

Psuedomonas aeruginosa

Question 6

What is unique about Pseudomonas aeruginosa? What disease does it cause?

Answer 6

green colonies, grape-like smell; pulmonary, septicemia, eye and ear infections

Question 7

This Gram (-) rod is aerobic, grows on MacConkey, is lactose non-fermenting, and oxidase negative. It is urease positive and is known for its “swarming” motility.

Answer 7

Proteus

Question 8

What disease does proteus cause?

Answer 8

UTI, kidney stones

Question 9

This Gram (-) rod is aerobic, grows on MacConkey, is lactose non-fermenting, and oxidase negative. It is motile, citrate positive, H2S positive, and is spread fecal-orally

Answer 9

Salmonella enterica

Question 10

What disease does Salmonella enterica cause?

Answer 10

diarrhea, enteric fever

Question 11

This Gram (-) rod is aerobic, grows on MacConkey, is lactose non-fermenting, and oxidase negative. It is non-motile and can be characterized by 5 F’s: food, feces, flies, fingers, and fomites

Answer 11

Shigella

Question 12

What disease does shigella cause?

Answer 12

shigellosis - shiga toxin, fever, cramps, diarrhea, dysentery

Question 13

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, and is seen with patients with damaged heart valves. It can cause septic arthritis in patients

Answer 13

HACEK species

Question 14

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, needs X and Y factors, is oxidase positive, and is known for its satellite phenomenon

Answer 14

Haemophillus Influenzae

Question 15

What disease does H. flu cause?

Answer 15

CAPSULE: meningitis, cellulitis, epiglottis

NO CAPSULE: otitis media, sinusitis, bronchitis, pneumonia

Question 16

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, but does grow on regan-lowe charcoal agar. It is important to use dacron swabs with this bacterium. It spreads through aerosol transmission.

Answer 16

Bordatella pertussis

Question 17

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, is found in ticks, is slow growing, and cross reacts with Brucella. It is considered a bioterrorism bacterium.

Answer 17

Francisella tularenis

Question 18

What disease does Francisella tularenis cause?

Answer 18

TULAREMIA: ulceroglandular, oculoglandular, pneumonia

Question 19

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, and comes from unpasteurized milk and cheese. It is considered a bioterrorism bacterium.

Answer 19

Brucella

Question 20

What disease does Brucella cause?

Answer 20

Brucellosis (undulant fever) - lives and replicates in macrophages

Question 21

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, is clean waterborne, survives in macrophages, and grows on BYCE agar with cysteine

Answer 21

Legionella pneumophillia

Question 22

What disease does Legionella pneumophillia cause?

Answer 22

legonnaires disease (pneumonia); pontiac fever (flu-like)

Question 23

This Gram (-) rod is aerobic, doesn’t grow on MacConkey, is considered a zoonotic disease and found in fleas

Answer 23

Yersinia pestis

Question 24

What disease does Yersnia pestis cause?

Answer 24

bubonic plague

Question 25

This Gram (-) rod is aerobic, doesn't grow on MacConkey, is considered a zoonotic disease and found in rats

Answer 25

Streptobacillus moniliformis

Question 26

What disease does streptobacillus moniliformis cause?

Answer 26

rate bite fever

Question 27

This Gram (-) rod is aerobic, doesn't grow on MacConkey, is considered a zoonotic disease and found in cats

Answer 27

Bartonella henselae

Question 28

What disease does Bartonella henselae cause?

Answer 28

cat scratch fever, bacilliary angiomatosis -> skin lesions in IC people

Question 29

This Gram (-) rod is aerobic, doesn't grow on MacConkey, is considered a zoonotic disease and found in lice

Answer 29

Bartonella quintana

Question 30

What disease does Bartonella quintana cause?

Answer 30

trench fever - fever, pain in long bones

Question 31

This Gram (-) rod is aerobic, doesn't grow on MacConkey, is considered a zoonotic disease and found in sand flies

Answer 31

Bartonella bacilliformis

Question 32

What disease does bartonella bacilliformis cause?

Answer 32

carrion's disease - rbcs are attacked -> anemia, muscle and joint pain

Question 33

This Gram (-) rod is aerobic, doesn't grow on MacConkey, is considered a zoonotic disease and found in domestic pets

Answer 33

Pasturella multocida

Question 34

What disease does pasutrella multocida cause?

Answer 34

local cellulitis

Question 35

These two Gram (-) rod are anaerobic

Answer 35

Bacteroids - intrabdominal abscess | Fuschiobacterium