Test 2 - Pre lab quizzes

Question 1

A sensitive test that differentiates staphylococci from streptococci is…

Answer 1

catalase

Question 2

a coagulase positive test identifies…

Answer 2

staph aureus

Question 3

what characteristic/test result provides the initial categorization of streptococci?

Answer 3

hemolysis on sheep blood

Question 4

Name 4 organisms that are typically associated with skin and/or join infections?

Answer 4

entercoccus
staph aureus
staph agalactiae
step pyogenes

Question 5

Is it reasonable to

screen staph aureus isolates for resistance to methicillin?

Answer 5

yes

Question 6

is it reasonable to start every identification algorithm with a gram stain?

Answer 6

yes

Question 7

What is the gram stain for STEC?

Answer 7

gram neg bacilli

Question 8

what is the gram stain for C. Diff

Answer 8

gram pos bacilli

Question 9

What is the gram stain and interesting shape for Vibrio species?

Answer 9

gram positive curved bacilli

Question 10

What is the gram stain for salmonella?

Answer 10

gram neg bacilli

Question 11

what is the gram stain for shigella?

Answer 11

gram neg bacilli

Question 12

What is the gram stain for campylobacter?

Answer 12

gram neg curved bacilli

Question 13

Name 3 enterobacteriaceae…

Answer 13

E. Coli
Salmonella
Shigella

Question 14

How do you keep a whole stool sample if it is not immediately tested?

Answer 14

place in transport media and refrigerate at 4 degrees C

Question 15

An organism that produces H2S and ferments glucose?

Answer 15

Salmonella

Question 16

a gut bacteria that is oxidase positive and ferments glucose

Answer 16

Vibrio

Question 17

a gut bacteria that is an anaerobe and smells like a horse barn?

Answer 17

C. Diff

Question 18

a gut bacteria that is acid fast positive and is a parasite

Answer 18

Cryptosporidium

Question 19

a gut bacteria that is oxidase positive and grows at 42 Degrees C

Answer 19

Camplyobacter

Question 20

a gut bacteria that does not ferment sorbitol but ferments glucose

Answer 20

STEC

Question 21

How should a CSF sample be stored if it cannot be tested immediately?

Answer 21

room temperature

Question 22

How does bacteria meningitis affect protein, glucose, and % PMNs in the area of infection?

Answer 22

increases protein above 30
decreases glucose below 60
makes PMN count go way high

Question 23

What bacteria typically causes meningitis in army recruits in their 20s

Answer 23

neisseria meningitidis

Question 24

What tests/cultures would you run on meningitis that you know is gram neg bacilli?

Answer 24

sheep blood
MacConkey
Oxidase

Question 25

What is the gram stain of Strep pneumo?

Answer 25

gram positive cocci in chains

Question 26

What is the gram stain of strep agalactiae?

Answer 26

gram positive cocci in chains

Question 27

What is the gram stain of listeria monocytogenes?

Answer 27

gram positive bacilli

Question 28

What is the gram stain of E coli?

Answer 28

gram negative bacilli

Question 29

What is the gram stain of H. Flu?

Answer 29

pleomorphic gram negative bacilli

Question 30

What is the gram stain for Neisseria meningitidis?

Answer 30

gram neg diplococci

Question 31

What is the gram stain for cryptococcus neoformans?

Answer 31

yeast