Micrococcaceae

Katie Koontz
Quiz by Katie Koontz, updated more than 1 year ago
Katie Koontz
Created by Katie Koontz over 3 years ago
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Description

All about Gram Positive Cocci

Resource summary

Question 1

Question
Ingredients in Mannitol Salt Agar
Answer
  • Salt, mannitol, phenol red
  • Salt, mannitol, lysostaphin, red coloring
  • Mannitol, sheep blood, lysostaphin, red enzymes

Question 2

Question
Micrococcaceae is not ubiquitous
Answer
  • True
  • False

Question 3

Question
[blank_start]Staphylococcus aureus[blank_end] are the most common causes of osteomyelitis and acute bacterial endocarditis
Answer
  • Staphylococcus aureus
  • Micrococcus
  • Staphylococcus saprophyticus
  • CNS

Question 4

Question
[blank_start]Staphylococcus saprophyticus[blank_end] is a common cause of urinary tract infection in young females
Answer
  • Staphylococcus saprophyticus
  • Micrococcus
  • S. auerus
  • CNS

Question 5

Question
Common infections of [blank_start]CNS[blank_end] include, UTI, bacterial endocarditis, infection of prosthetic joints, septicemiain immunosuppressed patients, wound infections and peritonitis.
Answer
  • CNS
  • S. saprophyticus
  • S. aureaus
  • Micrococcus

Question 6

Question
[blank_start]food poisoning[blank_end] is due to ingestion of of pre-formed enterotoxin in food- microorganisms do not have to be present
Answer
  • food poisoning
  • food infection
  • CNS
  • Micrococcus

Question 7

Question
Which Micrococcaceae is catalase negative?
Answer
  • Micrococcus
  • Stomatococcus
  • Planococcus
  • Staphylococcus

Question 8

Question
A staphaurex with a clear background a white speckles is what?
Answer
  • positive
  • negative

Question 9

Question
An organism grows on a mannitol salt agar plate and is pink. What can be said about this organism?
Answer
  • Salt +, Mannitol -
  • Salt +, Mannitol +
  • Salt -, Mannitol +
  • Salt -. Mannitol -

Question 10

Question
how would you interpret a bacitracin test if the organism measures at 16mm
Answer
  • resistant
  • senstitive/susceptible

Question 11

Question
Should staphylococcal food poisoning be treated with antibiotics?
Answer
  • Yes
  • No

Question 12

Question
What can be said about an organism that grows on a mannitol salt agar plate and is yellow
Answer
  • salt -, mannitol +
  • salt +, mannitol -
  • salt -, manntol -
  • salt +, mannitol +

Question 13

Question
negative slide coagulase tests need to be backed up with a tube test
Answer
  • True
  • False

Question 14

Question
If coagulase tube test clots up and becomes a jelly like substance what is it?
Answer
  • positive
  • negative

Question 15

Question
S. aureas commonly produces beta lactamase and renders penicillin useless
Answer
  • agree
  • disagree

Question 16

Question
virulence factors for s. aureus include all of the following EXCEPT:
Answer
  • Coagulase
  • Protein A
  • Exotoxin
  • Toxic Shock Toxin

Question 17

Question
Which test is used to differentiate between Staph's and Strep's?
Answer
  • catalse
  • coagulase
  • staphaurex

Question 18

Question
What common contaminant is isolated from blood cultures?
Answer
  • S. aureus
  • Coag Neg Staph
  • micrococcus sp
  • s. saprophyticus

Question 19

Question
Superficial skin infection usually involving the face or legs, begins as red macule which progresses to a vesicle which ruptures and forms a yellow, thick crust. May spread and form multiple lesions, more prevalent in the summer months
Answer
  • Impetigo
  • Erysipelas
  • Osteomalitis
  • Septic Arthritis

Question 20

Question
Skin infection which begins abruptly after an incubation period of about a week. Begins with the sensation of tightness and burning at site of invasion, followed quickly by a patch of erythema which rapidly extends outward; may form blisters which may rupture, leaving raw weeping areas
Answer
  • Impetigo
  • Erysipelas
  • Septic Arthritis
  • Osteomyelitis

Question 21

Question
An infection in a bone. Infections can reach a bone by traveling through the bloodstream or spreading from nearby tissue
Answer
  • Osteomyelitis
  • Acute Bacterial Endocarditis
  • Impetigo
  • Erysipelas

Question 22

Question
S.Aureus Colony Morphology: Large, frequently [blank_start]yellow[blank_end], opaque, [blank_start]creamy[blank_end], smooth, shiny, domed, round. Often but not always [blank_start]beta[blank_end] hemolytic
Answer
  • yellow
  • white
  • gray
  • offwhite
  • creamy
  • chalky
  • sticky
  • dull
  • beta
  • gamma
  • alpha

Question 23

Question
Mrsa is slide coagulase neg or pos
Answer
  • negative
  • positive

Question 24

Question
CNS colony morphology- [blank_start]offwhite[blank_end], round, domed, [blank_start]smooth[blank_end], sometimes not as creamy as s.aureus, usually smaller colonies than s. aureus, usually non-hemolytic or beta
Answer
  • offwhite
  • yellow
  • green
  • denim blue
  • smooth
  • sticky
  • dull
  • chalky

Question 25

Question
S. Sapticus colony morphology. often pigmented [blank_start]yellow[blank_end], opaque, [blank_start]sticky[blank_end], gummy, [blank_start]non-hemolytic[blank_end]
Answer
  • yellow
  • white
  • off-white
  • gray
  • green
  • sticky
  • creamy
  • chalky
  • dull
  • non-hemolytic
  • beta
  • alpha

Question 26

Question
Stomatococcus mucilaginosus colony morphology: [blank_start]small[blank_end], domed, adherent, [blank_start]gray-brown[blank_end], tough, [blank_start]stringy[blank_end]
Answer
  • small
  • medium
  • large
  • pinpoint
  • gray-brown
  • white
  • off-white
  • yellow
  • stringy
  • creamy
  • wet
  • chalky
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