UNIQUE GROWTH CHARACTERISTCIS

Question 1

Smooth, glistening and clay like

Answer 1

Neisseria elongata

Question 2

Buttery and creamy yellow

Answer 2

Staphylococcus aureus

Question 3

Brittle, crumbly, wrinkled

Answer 3

Nocardia

Question 4

Fried egg on BAP

Answer 4

Mycoplasma

Question 5

shiny half pearls on BAP; Colonies appearing like “mercury droplets”

Answer 5

Bordetella pertussis

Question 6

Greenish metallic sheen on BAP

Answer 6

Pseudomonas aeruginosa

Question 7

Greenish metallic sheen on EMB

Answer 7

E. coli

Question 8

Semi-opaque colonies “bull’s eye” appearing, gram (+)

Answer 8

Streptococcus agalactiae

Question 9

HOCKEY PUCK COLONIES. Colonies remaining intact when pushed across the plate using inoculating loop; colonies with WAGON WHEEL APPEARANCE

Answer 9

Moraxella catarrhalis

Question 10

Tenacious colonies with beaten egg white consistency. Colonies with “swirling projections” appearing like MEDUSA HEAD, LION HEAD, colonies with comet tail appearance

Answer 10

Bacillus anthracis

Question 11

Gray to black on CTBA and Black colonies with Brown halo on Tindsdale

Answer 11

Corynebacterium diphtheriae

Question 12

Salmon pink pigmentation on BAP

Answer 12

Rhodococcus equi

Question 13

Cauli flower like growth

Answer 13

M. tuberculosis

Question 14

Bird’s nest appearing colonies on Corn meal agar

Answer 14

Mycobacterium xenopi

Question 15

Anaerobes showing red fluorescence under UV

Answer 15

Veilonella

Question 16

Anaerobe that can Pit and corrodes agar

Answer 16

Campylobacter ureolyticus

Question 17

Pits and corrodes ahar with typical bleach like odor

Answer 17

Eikenella corrodens

Question 18

Colonies with an odor similar to an OLD SOCK on MSA

Answer 18

S. aureus

Question 19

Colonies with butter scotch odor

Answer 19

Streptococcus anginosus

Question 20

Pyocyanin and pyoverdin; serrated confluent growth on cetrimide

Answer 20

Pseudomonas aeruginosa

Question 21

Inverted Fir tree or inverted pine tree appearance on Gelatin media

Answer 21

Bacillus anthracis

Question 22

On BAP - it fluoresces CHARTREUSE
On CCFA - Horse stable or barn yard odor

Answer 22

Clostriumdium difficile

Question 23

Umbrella like growth on agar surface

Answer 23

Listeria

Question 24

Bottle brush like/ test tube brush like/ pipe cleaner pattern of growth

Answer 24

Erysipelothrix rhusiopathiae

Question 25

Burnt chocolate or Burnt Gun powder odor

Answer 25

Genus proteus

Question 26

Gram (-) yellow pigment that intensifies at RT

Answer 26

Cronobacter sakazakii

Question 27

Colonies with dirty, musty odor like potatoes

Answer 27

Serratia odorifera

Question 28

Water droplet appearing colonies

Answer 28

Mycobacterium bovis

Question 29

Bull's eye appearing colonies on CIN oxidase (-): oxidase (+):

Answer 29

Oxidase (-): Yersinia enterocolitica Oxidase (+): Aeromonas

Question 30

Hammered copper colonies on BAP

Answer 30

Y. pestis

Question 31

Non-fermenter - wrinkled colonies

Answer 31

Pseudomonas stutzeri

Question 32

Non-fermenter - wrinkled colonies with earthy odor

Answer 32

Burkholderia pseudomallei

Question 33

Shows satellitism - luxuriant growth near the source of the incorporated V factor

Answer 33

Haemophilus influenzae

Question 34

Molar tooth appearance colonies

Answer 34

Actinomyces israelii

Question 35

Colonies it with rhizoid margins appearing like "medusa head", swarming (+)

Answer 35

Clostridium septicum

Question 36

Colony types: Speckled and smooth Bread crumb like Greening on agar exposure to air

Answer 36

Fusobacterium nucleatum

Question 37

Sweet, fetid odor

Answer 37

Peptostreptococcus anaerobius

Question 38

Colonies appearing like "fried egg"

Answer 38

Fusobacterium varium

Question 39

Raspberry like colonies

Answer 39

Leptotrichia

Question 40

Produces Prodigiosin - brick red pigment

Answer 40

Serratia marcesens Serratia rubideae

Question 42

Colonies with an odor similar to overripe grapes; corn taco/corn tortilla like odor

Answer 42

Pseudomonas aeruginosa

Question 43

Produces violet pogment - VIOLACEIN, colony odor: ammonium cyanide odor

Answer 43

Chromobacterium violeceum

Question 44

Freshly plowed field

Answer 44

Nocardia

Question 45

Ground glass appearance

Answer 45

Legionella

Question 46

Non-culturable but can be maintained alive using mice foot pads or foot pads of armadillo

Answer 46

Mycobacterium leprae

Question 47

Non-cultivable but viability can be maintained using testicular chancre of rabbits

Answer 47

T. pallidum

Question 48

Breadcrumbs, puff balls/fluff balls growth on broth

Answer 48

Streptobacillus moniliformis Fusobacterium nucleatum

Question 49

Stalactite growth on broth

Answer 49

Y. pestis

Question 50

SWARMING ON SBA/CHOC AGAR Gram (-): Gram (+):

Answer 50

Gram (-): Rod Genus Proteus Gram (+): Rod C. tetani, C. septicum