MICROBIOLOGY MIDTERM

Question 1

Which organism is sensitive to bacitracin?

Answer 1

Micrococcus

Question 2

If an organism is bile solubility positive, a-hem, catalase - , what can it be?

Answer 2

strep. pneumonaie

Question 3

PYR +, a- hem, bile esculin +, 6.5 Nacl +, what is it?

Answer 3

Enterococcus spp.

Question 4

PYR -, a-hem, bile esculin +, 6.5 Salt +

Answer 4

S.Bovis

Question 5

LISTERIA MONOCYTOGENES RESULTS

Answer 5

gram +, cat +, BE +, slide motility + (tumbling), SIM +

Question 6

WHAT DO ALL ENTEROBACTERALES HAVE IN COMMON?

Answer 6

all oxidase negative, nitrate reducers, and glucose fermentors (acid butt), O/F +/+

Question 7

IMViC RESULTS FOR KLEBSIELLA PNEUMONIAE

Answer 7

–++ LF MUCOID COLONIES

Question 8

IMViC RESULTS FOR KLEBSIELLA OXYTOCA

Answer 8

+-++ LF

Question 9

IMViC RESULTS FOR E.COLI

Answer 9

++– LF

Question 10

CITROBACTER FRUENDII

Answer 10

-(V)+-+(V), H2S POSITIVE. LF

Question 11

ENTERBACTER CLOACAE

Answer 11

–++ , LYSINE NEG HOW TO DIFFER B/W KLEB P.

Question 12

SERRATIA MARCESCENS

Answer 12

–++, RED PIGMENT ON DNASE, LATE LACTOSE FERMENTER

Question 13

WHICH NLF ARE ONPG POSITIVE?

Answer 13

YERSINIA AND SHIGELLA

Question 14

IMViC RESULTS FOR SAMONELLA SPP. & KEY TESTS

Answer 14

-+-+ , KEY TEST LYSINE +, UREA - AND H2S +

Question 15

IMViC RESULTS FOR YERSINIA

Answer 15

V+–, A/A W/ PEACHY BUTT, NON-MOTLE AT 35, MOTILE AT ROOM TEMP.

Question 16

WHAT LF ARE NON-MOTILE?

Answer 16

KLEBSIELLA

Question 17

WHAT ENTEROBACTERALES ARE H2S POSITIVE?

Answer 17

SALMONELLA, PROTEUS, CITROBACTER

Question 18

WHAT NLF IS LYSINE POSITIVE

Answer 18

SALMONELLA

Question 19

IMViC RESULTS FOR SHIGELLA

Answer 19

-+–

Question 20

WHAT NLF ARE NEGATIVE FOR UREA?

Answer 20

SHIGELLA, SALMONELLA

Question 21

IMViC RESULTS FOR PROTEUS MIRABILLIS

Answer 21

-+-+ (V). INDOLE IS KEY IN IDENTIFYING DIFF B/W PROTEUS

Question 22

IMViC RESULTS FOR PROTEUS VULGARIS

Answer 22

++–(V)

Question 23

IMViC RESULTS FOR MORGANELLA MORGANNI

Answer 23

++– …..H2S NEG

Question 24

IMViC RESULTS FOR PROVIDENCIA SPP.

Answer 24

++-+

Question 25

WHAT NLF IS PHENOL NEG?

Answer 25

SHIGELLA, SALMONELLA, YERSINIA

Question 26

What are the gram positive bacilli?

Answer 26

Listeria monocytogenes, lactobillus, bacillus, corynebacterium