6612073
Questão 1
Questão
Prokaryotic organisms have
Responda
-
No nuclear envelope
-
A nuclear envelope
-
Chromosomes
Questão 2
Questão
Which of these are examples of oral habitats for microorganisms?
Responda
-
Buccal mucosa
-
Dorsal surface of tongue
-
Appliances
-
Gingival crevice
-
Tooth surface
Questão 3
Questão
Which of these are non-specific defence factors found in saliva?
Responda
-
Lactoferrin
-
Lysozyme
-
IgA
-
HCO3
-
PO4
Questão 4
Questão
Which of these are specific defence factors found in saliva?
Responda
-
IgA
-
Lysozyme
-
Lactoferrin
-
Calcineurin
Questão 5
Questão
What are the most important buffer systems of saliva?
Responda
-
HCO3
-
HPO4
-
Na
-
K
Questão 6
Questão
Lysozyme functions by cleaving the [blank_start]beta[blank_end]-1-4 linkage between N-acetylg[blank_start]lucosamine[blank_end] and N-acetylm[blank_start]uramic[blank_end] acid which is the repeating [blank_start]di[blank_end]saccharide unit of cell wall p[blank_start]eptidoglycan[blank_end]. This means it can lyse many streptococci.
Responda
-
beta
-
lucosamine
-
uramic
-
di
-
eptidoglycan
Questão 7
Questão
What pH of saliva promotes growth of some cariogenic bacteria?
Responda
-
Acidic
-
Neutral
-
Alkaline
Questão 8
Questão
Which of these are functions of GCF?
Responda
-
Flushing out microbes
-
Buffering
-
Provision of defence factors
-
Phagocytosis of bacteria by T cells
-
Phagocytosis of bacteria by neutrophils
Questão 9
Questão
What is an example of a defence factor in GCF?
Responda
-
Interleukin 1 beta
-
Interferon alpha
-
Bacteriocin like inhibitory substrate
-
Gingipains
Questão 10
Questão
What is the predominant leukocyte in GCF?
Responda
-
Neutrophils
-
B cells
-
T cells
-
Macrophages
Questão 11
Questão
What is an example of a synergistic interaction of bacteria?
Responda
-
Bacteria using metabolic end products as nutrient sources
-
The production of BLIS by strep salivarius to inhibit strep pyogenes
-
Occupation of niches to prevent colonisation by new species
Questão 12
Questão
Co-aggregation of the same species of bacteria is known as...
Responda
-
Homotypic
-
Heterotypic
-
Transience
-
Coexistence
Questão 13
Questão
What does BLIS stand for?
Responda
-
Bacteriocin like inhibitory substance
-
Bacterial inhibitory substance
-
Bacterial lysis substance
Questão 14
Questão
What is the main prerequisite for host colonisation?
Responda
-
Adherence to oral surfaces
-
Failure of host immunity
-
Previous dental caries
Questão 15
Questão
Which of these substances are extracellular polysaccharides produced by certain bacteria?
Responda
-
Glucan
-
Fructan
-
Levan
-
Dextran
Questão 16
Questão
What species of bacteria predominates in fissures?
Responda
-
Streptococci
-
Lactobacilli
-
Actinomyces
Questão 17
Questão
Prevotella, Porphyromonas and Spirochaetes tend to colonise the
Responda
-
Teeth
-
Gingival crevice
-
Buccal mucosa
Questão 18
Questão
Strep and Actinomyces spp. tend to attach to the
Responda
-
Teeth
-
Gingival crevice
-
Dorsum of the tongue
-
Vestibule
Questão 19
Questão
Anaerobic bacteria do not tend to appear until adolescence.
Responda
- True
- False
Questão 20
Questão
Loss of all the teeth (senility) leads to oral microflora similar to..
Responda
-
Those with appliances
-
Children before eruption
-
Adults with acute necrotising ulcerative gingivitis
-
Those found in the gingival crevice
Questão 21
Questão
Denture plaque is most similar to...
Responda
-
Enamel plaque
-
Crevicular plaque
-
Mucosal plaque
Questão 22
Questão
Dental plaque contains...
Responda
-
Dead bacteria
-
Living bacteria
-
Host compounds derived mainly from Saliva
-
Prions
-
Metabolic end products of bacteria
Questão 23
Questão
Organic matrix makes up ___ of plaque
Responda
-
30%
-
40%
-
10%
-
75%
Questão 24
Questão
Plaque is the result of mineralisation of calculus
Responda
- True
- False
Questão 25
Questão
Glucose is a better intracellular store than glycogen for bacteria.
Responda
- True
- False
Questão 26
Questão
The enzyme(s) involved in extracellular polysaccharide formation is/are...
Responda
-
Fructosyltransferase
-
Glucosyltransferase
-
Hexokinase
-
Fructokinase
Questão 27
Questão
Xylitol is fermented but very slowly
Responda
- True
- False
Questão 28
Questão
Starch is less cariogenic than sucrose
Responda
- True
- False
Questão 29
Questão
Cooked starch and sucrose is more cariogenic than sucrose alone
Responda
- True
- False
Questão 30
Questão
____________________ help bacteria to continue to produce acid after dietary sugar is exhausted
Responda
-
Intracellular polysaccharides
-
Extracellular polysaccharides
-
Glucosyltransferase and fructokinase
Questão 31
Questão
The most important acid resulting in caries is...
Responda
-
Lactic acid
-
Acetic acid
-
Propionic acid
Questão 32
Questão
Why can sucrose readily diffuse into plaque?
Responda
-
Small molecular size
-
Lots of energy released upon its breakdown
-
Bacterial metabolism is rapid
Questão 33
Responda
-
Invertase
-
Glucosyltransferase
-
Hexokinase
-
Sucrase
Questão 34
Responda
-
Glucosyltransferase
-
Fructosyltransferase
-
Invertase
-
Maltase
Questão 35
Responda
-
Glycogen
-
Glucose
-
Glucan
-
Dextran
Questão 36
Responda
-
Dissolution
-
Remineralisation
-
Deposition
Questão 37
Questão
Glucosyltransferase can break down sucrose.
Responda
- True
- False
Questão 38
Questão
Fructosyltransferase can break down sucrose.
Responda
- True
- False
Questão 39
Questão
Glucosyltransferase converts sucrose into fructans and glucans.
Responda
- True
- False
Questão 40
Responda
-
Fructosyltransferase
Questão 41
Questão
Irreversible short range interactions of plaque involve
Responda
-
Adhesin receptors
-
Van Der Waals forces
-
Hydrogen bonding
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.