Name that Bug - Labs

Question 1

Gram positive –> Cocci Clusters –> Catalase +

Answer 1

Staphylococcus

Question 2

Gram positive –> Cocci –> Catalase +/Coagulase +

Answer 2

S. aureus

Question 3

Gram positive –> Cocci –> Catalase +/Coagulase -/Novobiocin sensitive

Answer 3

S. epidermidis

Question 4

Gram positive –> Cocci –> Catalase +/Coagulase -/Novobiocin resistant

Answer 4

S. saprophyticus

Question 5

Gram + –> Rods –> anaerobic

Answer 5

Clostridium

Question 6

Gram + –> Rods

Answer 6

Corynebacterium

Listeria

Question 7

Gram + –> Rods –> aerobic

Answer 7

Bacillus

Question 8

Gram + –> Rods –> acid fast

Answer 8

Mycobacterium

Question 9

Gram + –> Cocci Chains –> Catalase -

Answer 9

Streptococcus

Question 10

Gram + –> branching filaments –> anaerobe

Answer 10

Actinomyces

Question 11

Gram + –> branching filaments –> aerobe, acid-fast

Answer 11

Nocardia

Question 12

Gram + –> Cocci Chains –> Catalase - –> alpha hemolytic (green) –> + quellung and optochin sensitive

Answer 12

S. pneumoniae

Question 13

Gram + –> Cocci Chains –> Catalase - –> alpha hemolysis (green) –> optochin resistant

Answer 13

Viridans streptococci (S. mutans)

Question 14

Gram + –> Cocci Chains –> Catalase - –> beta hemolytic (clear) –> bacitracin sensitive

Answer 14

Group A - S. pyogenes

Question 15

Gram + –> Cocci Chains –> Catalase - –> beta hemolytic (clear) –> bacitracin resistant

Answer 15

Group B - S. agalactiae

Question 16

Gram + –> Cocci Chains –> Catalase - –> gamma hemolytic (no hemolysis) –> growth in bile and 6.5% NaCl

Answer 16

Group D Enterococcus (E. faecalis)

Question 17

Gram + –> Cocci Chains –> Catalase - –> gamma hemolytic (no hemolysis) –> growth in bile

Answer 17

Nonenterococcus (S. bovis)

Question 18

Staph Novobiocin test

Answer 18

Staph retreat has NO StRESs
NOvobiocin
Saprophyticus is Resistant
Epidermidis is Sensitive

Question 19

Strept Optochin test

Answer 19

OVRPS (overpass)
Optochin
Viridans is Resistant
Pneumoniae is Sensitive

Question 20

Strept Bacitracin test

Answer 20

B-BRAS
Bacitracin
group B strep Resistant
group A strep Sensitive

Question 21

alpha hemolytic

Answer 21

Streptococcus pneumoniae

Viridans streptococci

Question 22

beta hemolytic

Answer 22

S. aureus
S. pyogenes
S. agalactiae
Listeria monocytogenes (milk, minigitis in newborns)

Question 23

Gram - (pink) –> oxidase + –> comma-shaped –> grows at 42 C

Answer 23

Campylobacter jejuni

Question 24

Gram - (pink) –> oxidase + –> comma-shaped –> grows in alkaline media

Answer 24

Vibrio cholerae

Question 25

Gram - (pink) –> diplococci –> maltose fermenter

Answer 25

Neisseria meningitidis (brain needs sugar - maltose fermenter)

Question 26

Gram - (pink) –> diplococci –> maltose nonfermenter

Answer 26

Neisseria gonorrhoeae

Question 27

Gram - (pink) –> coccoid rods –> factors V and X

Answer 27

Haemophilus influenzae

Question 28

Gram - (pink) –> coccoid rods

Answer 28

Pasteruella - animal bites
Brucella - brucellosis
Bordetella pertussis

Question 29

Gram - (pink) –> rods –> lactose fermenter fast (pink colonies on MacConkey’s agar or purple/black on EMB)

Answer 29

Klebsiella
E. coli - on EMB has a green sheen
Enterobacter

Question 30

Gram - (pink) –> rods –> lactose fermenter slow (pink colonies on MacConkey’s agar or purple/black on EMB)

Answer 30

Citrobacter

Serratia

Question 31

Gram - (pink) –> rods –> lactose non fermenter –> oxidase -

Answer 31

Shigella
Salmonella
Proteus
Gram - rods are resistant to penicillin G

Question 32

Gram - (pink) –> rods –> lactose non fermenter –> oxidase +

Answer 32

Pseudomonas
H. pylori
Gram - rods are resistant to penicillin G