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Duplicate of MLT 107 Unit 5 Review Flashcards | StudBud
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Duplicate of MLT 107 Unit 5 Review
Duplicate of MLT 107 Unit 5 Review
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Answers
1
What Neisseria spp. Spreads quickly in crowded living conditions?
Neisseria catalharis
Neisseria moraxella
Neisseria lactamica
Neisseria meningitides
2
What nutrients are required for the growth of Haemophilus spp.?
Do re mi
A B C
1 2 3
X & V
3
Microbiological cultures are optional when ruling out Legionella pneumophilia.
True
False
4
What is the storage temperature when culture of a specimen to rule out Legionella spp. is delayed for more than 2 hours?
Incinerate the sample and request a new specimen
Incubate the sample in 35 degrees non - CO2 incubator
Room Temperature
Refrigerate the specimen and freeze at -70 if delayed for several days
5
What are the symptoms experienced by a patient with a Haemophilus ducreyi chancroid infection?
Fever loss of appetite and thirst
Painful lesions of the penis labia or vagina
None of these
Migraine headaches tachycardia and swollen lymph nodes
6
Bordetella pertussis can be ruled out via culture or PCR of a nasopharyngeal swab?
True
False
7
Commensal flora spread by respiratory droplets found in mucosal surfaces; recovered from oral-genital and rectal site.
Neisseria lactamica
Neisseria moraxella
Neisseria catalharis
Neisseria meningitides
8
The colony morphology of Moraxella catarrhalis is ________.
Older colonies give a “wagon-wheel” appearance
Smooth opaque gray to white colonies
All of these
May be described as a “hockey puck”
9
Which of the following organisms belongs to the family Moraxellaceae and is isolated only in humans?
Moraxella catarrhalis
Neisseria sicca
None of these
Neisseria gonorrhoeae
10
Which of the following describes members of the HACEK group?
Haemophilus spp. A. actinomycetemcomitans, C. hominis E. influenzae
Haemophilus spp. A. actinomycetemcomitans, C. ducreyi E. corrodens Kingella
Haemophilus spp. A. Influenzae, C. hominis E. corrodens Kingella spp
Haemophilus spp. A. actinomycetemcomitans, C. hominis E. corrodens Kingella
11
What methods would a microbiologist use to identify Legionella spp?
Direct fluorescent antibody (DFA) test
Indirect immunofluorescence
DNA detection
All of these
12
What haemophilus strain can cause contagious conjunctivitis and is also known as Koch-Weeks bacillus?
Heamophilus influenza biogroup aegyptius
Heamophilus ducreyi
Heamophilus parainfluenzae
Heamophilus aphrophilus
13
What is the significance of suppressing normal flora growth on a MTM plate?
There is no need to add antibiotics to an MTM plate
There is no need to add antifungals to the MTM plate
Increase selectivity of the MTM plate; increase recovery of N. gonorrhoeae
To increase the market price of the plate
14
What species has yellow granular convex colonies on chocolate agar and is the most prevalent species of the HACEK group?
Kingella spp.
Haemophilus spp.
Aggregatibacter aphrophilus
Aggregatibacter actinomycetemcomitans
15
A petri dish with nails was submitted to the laboratory for a patient John Doe for a Haemophilus work up. What's next?
Inoculate the nails by embedding them into SBA plates
Reject the sample (Wrong site); request a blood joint or middle ear exudate
Post it on social media
Call the CDC
16
Aggregatibacter actinomycetemcomitans is catalase positive and oxidase _______.
Neutral
Variable
Negative
Positive
17
Bordetella pertussis and Bordetella parapertussis are responsible for causing ________?
Urinary tract infections
All of these
Strep throat
Whooping cough
18
The ONPG test is used to differentiate what organism?
Neisseria meningitides and Moraxella catalharis
Staphylococcus from Streptococcus spp.
Moraxella spp from Neisseria
Neisseria meningitides and Neisseria lactamica
19
What type of swab would you use to rule out Neisseria gonorrhoeae?
Sterile swab
Cotton Swab
Calcium alginate swab
Dacron or Rayon swab
20
Colony morphology microscopic identification and the oxidase test can be used to presumptively identify N. meningitides.
True
False
21
Which of the following antibiotics would NOT be prescribed to treat a Moraxella catarrhalis infection?
Trimethoprim-sulfamethoxazole
Tylenol Motrin and Water
Extended spectrum cephalosporins
Amoxicillin-clavulanic acid
22
Chocolate agar is a essential in the recovery of fastidious organisms and presumptive identification all; EXCEPT:
Cardiobacterium hominis
Heamophilus Influenzae
Aggregatibacter aphrophilus
Streptococcus pneumonieae
23
Francisella tularensis is responsible for causing what disease?
Dog fever
Parrot fever
Cat fever
Rabbit Fever
24
What haemophilus strain is rarely associated with endocarditis?
Heamophilus influenza biogroup aegyptius
Heamophilus ducreyi
Heamophilus aphrophilus
Heamophilus parainfluenzae
25
Neisseria gonorrhoeae colonies are incubated at 350C and 5% CO2?
True
False
26
Which organism is described as an opportunistic pathogen for the upper respiratory tract for children and the elderly?
Neisseria meningitides
Neisseria catalharis
Neisseria lactamica
Moraxella catarrhalis
27
What are the recovery sites for Neisseria meningitides?
Oral genital
Oral genital, urogenital and rectal
Urogenital and rectal
None of these
28
What is the microscopic morphology of Legionella pneumophilia?
Pleomorphic, thin, weakly staining, gram-negative cocci
Pleomorphic, thin, weakly staining, gram-negative rods
Pleomorphic, thin, weakly staining, gram-positive rods
Pleomorphic, thin, weakly staining, gram-variable rods
29
Disseminated gonococcal disease causes all of the following conditions except?
Intermittent bacteremia with fever
Rash on the extremities
Runny Nose
Purulent arthritis
30
What are the specimen collection sites for the recovery of Moraxella catarrhalis?
Nasopharynx
Middle ear effusion
All of these
Sinus, sputum or bronchial aspirates
31
Describe the macroscopic appearance of Neisseria gonorrhea on MTM.
Blue-green colonies
Raised Small gray to tan translucent colonies
Gram positive bacilli
Mucoid colonies with a cream color
32
All of the following are roles of the Haemophilus influenza capsule; EXCEPT:
Plays an important role in the invasiveness of the bacteria into tissues
Antiphagocytic and anticomplement roles
Digestion of extracellular nutrients
Perpetuates systemic infections
33
What are the methods utilized when conducting the porphyrin test?
Agar , Broth or Disk
Slide agglutination
Disk
Broth
34
Nicotinamide-adenine dinucleotide (NAD) is essential for?
Anaerobic Haemophilus spp., Work up without heme
Haemophilus spp.
All of these
Aerobic Haemophilus spp., Work up with heme and no nutrients
35
Of the following, which is an acceptable transport media for Neisseria gonorrhoeae?
Saline solution
Amies medium with charcoal
Cary Blair transport media
Cotton Swab
36
The virulence factors for Neisseria spp. include all of the following; EXCEPT?
Fimbriae or pili formation
Immunoglobin A protease
Exotoxin
Capsule formation
37
The oxidase/catalase reaction for Neisseria spp. is ________?
Oxidase and catalase variable
None of these
Oxidase and catalase positive
Oxidase and catalase negative
38
Pasturella multocida is the most commonly isolated pasturella species?
False
True
39
Which of the Major outer membrane proteins (MOMP) are important for antigenic variation of Neisseria spp?
Protein III and LOS
Protein II
All of these
Protein
40
A febrile disease without pneumonia (pulmonary involvement ) caused by Legionella pneumophilia is termed as ______.
Pontiac fever
Legionnaires’ disease
Mustang fever
Malta fever
41
What is unique in regards to the incubation of a Moraxella catarrhalis culture?
None of these
Can tolerate lower temperatures and grows well at 28 C
Can tolerate high temperatures and grows well at 42 C
Can be incubated at room temperature
42
Gram negative diplococci that are both intracellular and extracellular describe what specie of Neisseria?
Moraxella catarrhalis
Neisseria lactamica
Neisseria catalharis
Neisseria meningitides
43
What are the incubation requirements for Haemophilus influenzae?
23°C - 27°C, 50% to 100%
30°C - 70°C, 5% to 10%
33°C - 37°C, 5% to 10%
3°C - 7°C, 15% to 20%
44
How do newborns acquire Opthalmia neonatorum?
Nursing from an infected parent
Inhaling droplets from other infected neonates.
Ingestion on uncooked meat
During birth, passing through the birth canal infected with N. gonorrhoeae
45
What is the oxidase/catalase reaction for Moraxella catarrhalis?
Oxidase and catalase positive
Oxidase and catalase variable
None of these
Oxidase and Catalase negative
46
Untreated cervicitis can lead to what condition in women?
Fever
Night sweats
Pharyngitis
Pelvic inflammatory disease
47
The male symptoms of a Neisseria gonorrhoeae infection are ________?
Dysuria, purulent urethral discharge, urethral stricture and prostatitis
None of these
Dysuria and purulent urethral discharge
Urethral stricture and prostatitis
48
Moraxella catarrhalis is a commensal it can cause upper respiratory infections in health children and the elderly.
False
True
49
Describe the macroscopic description of Haemophilus influenzae?
Swarming purple colonies with a grape like smell
Large white mucoid colonies
Translucent moist smooth convex colonies
Grey colonies with a medusas head appearance
50
Haemophilus spp. can convert nitrate into nitrite; Aerobic to facultative bacteria.
False
True
51
Why is serological testing for Bordetella pertussis not widely used?
Expensive and not widely available
None of these
Testing is not standardized
All of these
52
What medications are available for treatment of haemophilus infections?
Trimethoprim and sulfamethoxazole
All of these
Azithromycin
Ceftriaxone / cefotaxime
53
All of the following are symptoms of Meningococcal meningitis; EXCEPT:
Fever
Polycythemia vera
Frontal headache
Stiff neck
54
A febrile disease with pneumonia caused by Legionella pneumophilia is termed as ______.
Legionnaires’ disease
Pontiac fever
Malta fever
Scalded skin syndrome
55
Mousy or bleach like odor is associated with which Haemophilus species?
Haemophilus ducreyi
Haemophilus parainfluenzae
Haemophilus aphrophilus
Haemophilus influenzae
56
Describe a positive reaction for a woods lamp technique for the porphyrins test?
Fluoresce white under UV light
Fluoresce purple under UV light
Fluoresce reddish-orange under UV light
Fluoresce green under UV light
57
Which of the following bacterial species can infect a human after a dog or cat bite?
None of these
Pasteurella spp.
Campylobacter spp.
Francisella tularensis
58
Describe the microscopic morphology of Neisseria gonorrhoeae.
Gram positive bacilli
gram-negative intracellular diplococci
Gram negative bacilli
Gram positive cocci in chains
59
Azithromycin and fluoroquinolone can be used to treat?
Early legionella pneumophilia infections
High blood pressure medication
Diabetic treatment
Dietary disease
60
What are the acceptable specimen for a Legionella spp. culture?
Wound swab
Sputum, Broncho alveolar lavage, bronchial washing
Blood and Pleural fluid
Genital exudate, vaginal swab,
61
Legionella pneumophila causes ______ because it produces symptoms that are different from a _______ infection.
UTI’s; Escherichia coli
Community-acquired pneumonia; Streptococcus
AIDS; Staphylococcus
URT’s; Haemophilus
62
What special ingredients are found in the Haemophilus quad plate?
Seasonal salts
Factor X Factor V, Factor X and V heme and NAD
Factor X and V
Factor X only
63
What tests are instrumental for the diagnostic determination of meningitis?
CSF and Blood Culture
Wound and throat culture
BMP and CBC
PHA part I and II
64
What Neisseria spp. spreads quickly via sexual contact?
Moraxella catarrhalis
Neisseria lactamica
Neisseria gonorrhoeae
Neisseria catalharis
65
Normal flora of the upper respiratory tract include all the following; EXCEPT.
Neisseria gonorrhoeae
Streptococcus pneumonia
Neisseria meningitidis
Moraxella catarrhalis
66
Which of the following describe Haemophilus spp.?
Pink colonies on MacConkey plate
Catalase positive gram positive bacilli
Oxidase positive non-motile gram negative coccobacilli
Gram positive streptococcus pairs and chains, catalase negative and motile
67
What is the preferred selective media for the recovery of Bordetella pertussis?
MacConkey agar
Chocolate agar
Bordet-Gengou (Potato infusion) agar
None of these
