Oral Microbiology Preparation (Ph. Heng Kanika)

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378

1 / 30

1) Mumps virus is belonging to?

a. Retroviriae

b. Orthomyxoviridae

c. Paramyxoviridae

d. None of these

2 / 30

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

a. Mumps

b. Poliomyelitis

c. A. Measles

d. Rubella

3 / 30

3) Cryptococcosis?

a. Is a localized inflammation around and under the nails

b. Is an infection caused by Cryptococcus neoformans

c. Is associated with dog lovers

d. Can cause cardiac abnormalities

4 / 30

4) 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. Candida albicans

b. Herpes simplex

c. Actinomyces

d. Staphylococcus aureus

5 / 30

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

a. Hyaluronic acid

b. Proteases, haemolysin and collagenase

c. Cytotoxins

d. Adhesins

6 / 30

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

a. Staphylococcus epidermidis

b. Staphylococcus aureus

c. Escherichia coli

d. Streptococcus sorbinus

7 / 30

7) Which microorganism implicated in pit and fissure caries?

a. Actinimyces viscosus

b. Streptococcus mitis

c. Staphylococcus aureus

d. Streptococcus mutans

8 / 30

8) Epstein-Barr Virus (EBV)?

a. Achieves latency in sensory ganglia

b. Cause of infectious mononucleosis

c. Betaherpesvirus subfamily of herpesviruses

d. Group A infect: skin and mucous membranes

9 / 30

9) Main causative organism of chicken pox is?

a. Mumps virus

b. Measles virus

c. Varicella Zoster virus

d. Fox virus

10 / 30

10) Certain strains of Streptococcus mutans?

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

b. Are cause of infective meningitides

c. Extracellular glucan production.

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

11 / 30

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

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

b. Short rods, but often pleomorphic

c. It is a eukaryote

d. It causes chronic granulomatous infections

12 / 30

12) 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. Herpes zoster

c. Paramyxovirus

d. Epstein-Barr

13 / 30

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

a. Microaerophilic

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

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

d. Black pigmented Gram-positive

14 / 30

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

a. hemolysine

b. Streptodornas

c. leukotoxin A

d. Hyaluronidase

15 / 30

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

a. Aggressive forms of periodontal disease in adolescents

b. Non-capsulate diplococcic

c. cigar-shaped bacilli

d. Aggressive forms of dental caries in adolescents

16 / 30

16) Coxsakievirus have been found to replicate in the?

a. Small bowel

b. Reticuloendothelial system

c. Submucosal lymph tissue

d. Sensory nerve

17 / 30

17) Fusobacterium Nucleatum 😕

a. Cause scarlet fever

b. Black pigmented Gram-negative microorganism

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

d. Implicated in Dental caries

18 / 30

18) Herpagina is usually cause by?

a. Hepatitis A virus

b. Group A coxsackieviruses

c. Cytomegalovirus

d. Group B coxackieviruses

19 / 30

19) AIDS virus is ?

a. Enterovirus

b. DNA virus

c. RNA virus

d. Retro virus

20 / 30

20) Causative agent of scarlet fever?

a. Streptococcus pyogens

b. Staphylococcus aureus

c. Streptococcus viridans

d. None of these

21 / 30

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

a. Fusobacterium nucleatum and Actinomyces viscosus

b. Fusobacterium nucleatum and Streptococcus mutans

c. Staphylococcus aureus and Streptococcus mutans

d. Fusobacterium nucleatum and Spirochetes

22 / 30

22) 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. Streptococcus

b. Bacteroides

c. Lactobacillus

d. Staphylococcus

23 / 30

23) 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 hands or objects

c. Transferred by insects bite.

d. Required by transient flora

24 / 30

24) During AIDS, HIV infects?

a. CD3 lymphocytes

b. CD4 lymphocytes

c. CD2 lymphocytes

d. B Lymphocytes

25 / 30

25) Fusobacterium Nucleatum 😕

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

b. Isolated from monomicrobial infections

c. Non capsulate diplococci

d. Gram-positive, strictly anaerobic

26 / 30

26) Porphyromonas gingivalis:?

a. Are isolated from many extra oral sites

b. Are non-capsulated

c. Are Gram-positive pleomorphic rods

d. Are aggressive periodontal pathogens

27 / 30

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

a. Fusobacterium Nucleatum

b. Staphylococcus aureus

c. Actinomyces viscosus

d. Porphyromonas gingivalis

28 / 30

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

a. Streptokinase

b. Phosphate

c. Hemolysin

d. Hyaluronides

29 / 30

29) Primary herpesvirus infections may cause:?

a. Herpes zoster

b. Meningititis

c. Herpetic gingivostomatitis

d. Herpes labialis

30 / 30

30) 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. Pericoronitis

c. Acute necrotizing ulcerative gingivitis

d. Herpetic stomatitis

Your score is

The average score is 90%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត