Oral Microbiology Preparation (Ph. Heng Kanika)

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590

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1) A patient attends the surgery with bilateral swelling of the parotid salivary glands. Which condition are they suffering from?

a. Mumps

b. Rubella

c. A. Measles

d. Poliomyelitis

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2) Which of the following statements on Prevotella Intermedia are true:?

a. Implicated in periodontal disease in association with P. gingivalis

b. Microaerophilic

c. Black pigmented Gram-positive

d. Implicated in dental Caries in association with Aggregatibacter actino- mycetemcomitans.

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3) Several infections occur in the oral cavity that are of relevance to the dental team. Which of the following infections does virus cause?

a. Lateral periodontal abcess

b. Herpetic stomatitis

c. Pericoronitis

d. Acute necrotizing ulcerative gingivitis

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4) Epstein-Barr Virus (EBV)?

a. Group A infect: skin and mucous membranes

b. Betaherpesvirus subfamily of herpesviruses

c. Cause of infectious mononucleosis

d. Achieves latency in sensory ganglia

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5) Main causative organism of chicken pox is?

a. Mumps virus

b. Fox virus

c. Measles virus

d. Varicella Zoster virus

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6) Mumps virus is belonging to?

a. Paramyxoviridae

b. None of these

c. Orthomyxoviridae

d. Retroviriae

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7) Actinobacillus actinomycetemcomitans possesses certain virulence factors that enable it to invade tissues, such as ?

a. hemolysine

b. Streptodornas

c. Hyaluronidase

d. leukotoxin A

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8) Which of the following organisms is most likely to be implicated in dental caries?

a. Escherichia coli

b. Staphylococcus aureus

c. Streptococcus sorbinus

d. Staphylococcus epidermidis

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9) There are many different types of bacteria normally present in the oral cavity. Which of the following is the name of the one most likely to be associated with the onset of dental caries?

a. Bacteroides

b. Staphylococcus

c. Lactobacillus

d. Streptococcus

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10) Porphyromonas gingivalis:?

a. Are non-capsulated

b. Are isolated from many extra oral sites

c. Are Gram-positive pleomorphic rods

d. Are aggressive periodontal pathogens

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11) Acute necrotizing ulcerative gingivitis (ANUG) or trench mouth is caused by a mixed bacterial infection such as?

a. Fusobacterium nucleatum and Streptococcus mutans

b. Staphylococcus aureus and Streptococcus mutans

c. Fusobacterium nucleatum and Actinomyces viscosus

d. Fusobacterium nucleatum and Spirochetes

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12) Which of the following statements on Actinomycetes are not true?

a. Short rods, but often pleomorphic

b. It is a eukaryote

c. It causes chronic granulomatous infections

d. It infrequently causes actinomycoses of the jaws after tooth extractions

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13) Certain strains of Streptococcus mutans?

a. Extracellular glucan production.

b. Cause of periodontal disease by the production of lactic and acids from fermentation of sugars

c. Are cause of infective meningitides

d. Cause dental caries by the production of lactic and other acids, from fermentation of sugars

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14) Cryptococcosis?

a. Is associated with dog lovers

b. Is an infection caused by Cryptococcus neoformans

c. Is a localized inflammation around and under the nails

d. Can cause cardiac abnormalities

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15) Herpagina is usually cause by?

a. Group B coxackieviruses

b. Hepatitis A virus

c. Cytomegalovirus

d. Group A coxsackieviruses

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16) Which of the following statement on Actinobacillus actinomycetemcomitans are true?

a. Non-capsulate diplococcic

b. Aggressive forms of periodontal disease in adolescents

c. cigar-shaped bacilli

d. Aggressive forms of dental caries in adolescents

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17) Elderly patients sometimes present with a fungal infection of the palate, beneath a denture,referred to as denture stomatitis. Which organism causes this condition?

a. Staphylococcus aureus

b. Actinomyces

c. Candida albicans

d. Herpes simplex

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18) Fusobacterium Nucleatum 😕

a. Implicated in Dental caries

b. Black pigmented Gram-negative microorganism

c. Cause scarlet fever

d. Plays a crucial role in the beginning of periodontal disease

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19) Primary herpesvirus infections may cause:?

a. Herpes zoster

b. Meningititis

c. Herpetic gingivostomatitis

d. Herpes labialis

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20) Various viral infections are of relevance to the dental team, including those that cause disease affecting the head neck region. Which one of the following viruses causes cold sores?

a. Herpes simplex

b. Paramyxovirus

c. Epstein-Barr

d. Herpes zoster

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21) Causative agent of scarlet fever?

a. Streptococcus pyogens

b. None of these

c. Staphylococcus aureus

d. Streptococcus viridans

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22) Fusobacterium Nucleatum 😕

a. Isolated from monomicrobial infections

b. Gram-positive, strictly anaerobic

c. Produce proinflammatory cytokines and up-regulating the inflammatory response

d. Non capsulate diplococci

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23) The virulence of Porphyromonas gingivalis is partly due to?

a. Cytotoxins

b. Proteases, haemolysin and collagenase

c. Adhesins

d. Hyaluronic acid

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24) During AIDS, HIV infects?

a. CD3 lymphocytes

b. CD2 lymphocytes

c. CD4 lymphocytes

d. B Lymphocytes

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25) AIDS virus is ?

a. Retro virus

b. RNA virus

c. Enterovirus

d. DNA virus

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26) There are some main routes of infection in oral cavity, which one is inexact?

a. Transferred through the air on dust particles or water droplets

b. Transferred by insects bite.

c. Transferred by hands or objects

d. Required by transient flora

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27) The organisms most commonly associated with root caries are ?

a. Actinomyces viscosus

b. Porphyromonas gingivalis

c. Staphylococcus aureus

d. Fusobacterium Nucleatum

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28) Toxins or enzymes which are not produced by streptococcus pyogenes?

a. Hemolysin

b. Streptokinase

c. Hyaluronides

d. Phosphate

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29) Coxsakievirus have been found to replicate in the?

a. Small bowel

b. Reticuloendothelial system

c. Sensory nerve

d. Submucosal lymph tissue

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30) Which microorganism implicated in pit and fissure caries?

a. Staphylococcus aureus

b. Streptococcus mitis

c. Actinimyces viscosus

d. Streptococcus mutans

Your score is

The average score is 86%

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និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត