/30 590 Oral Microbiology Preparation (Ph. Heng Kanika) 1 / 30 1) Which of the following statements on Actinomycetes are not true? a. Short rods, but often pleomorphic b. It is a eukaryote c. It infrequently causes actinomycoses of the jaws after tooth extractions d. It causes chronic granulomatous infections 2 / 30 2) Coxsakievirus have been found to replicate in the? a. Reticuloendothelial system b. Sensory nerve c. Submucosal lymph tissue d. Small bowel 3 / 30 3) Primary herpesvirus infections may cause:? a. Meningititis b. Herpetic gingivostomatitis c. Herpes zoster d. Herpes labialis 4 / 30 4) Porphyromonas gingivalis:? a. Are isolated from many extra oral sites b. Are non-capsulated c. Are aggressive periodontal pathogens d. Are Gram-positive pleomorphic rods 5 / 30 5) The virulence of Porphyromonas gingivalis is partly due to? a. Adhesins b. Proteases, haemolysin and collagenase c. Hyaluronic acid d. Cytotoxins 6 / 30 6) 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. Epstein-Barr b. Herpes simplex c. Paramyxovirus d. Herpes zoster 7 / 30 7) Which of the following statement on Actinobacillus actinomycetemcomitans are true? a. cigar-shaped bacilli b. Aggressive forms of dental caries in adolescents c. Non-capsulate diplococcic d. Aggressive forms of periodontal disease in adolescents 8 / 30 8) Which microorganism implicated in pit and fissure caries? a. Actinimyces viscosus b. Streptococcus mutans c. Staphylococcus aureus d. Streptococcus mitis 9 / 30 9) During AIDS, HIV infects? a. B Lymphocytes b. CD4 lymphocytes c. CD2 lymphocytes d. CD3 lymphocytes 10 / 30 10) 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. Actinomyces b. Herpes simplex c. Staphylococcus aureus d. Candida albicans 11 / 30 11) Which of the following organisms is most likely to be implicated in dental caries? a. Staphylococcus aureus b. Staphylococcus epidermidis c. Streptococcus sorbinus d. Escherichia coli 12 / 30 12) Cryptococcosis? a. Is a localized inflammation around and under the nails b. Can cause cardiac abnormalities c. Is associated with dog lovers d. Is an infection caused by Cryptococcus neoformans 13 / 30 13) The organisms most commonly associated with root caries are ? a. Porphyromonas gingivalis b. Staphylococcus aureus c. Actinomyces viscosus d. Fusobacterium Nucleatum 14 / 30 14) Main causative organism of chicken pox is? a. Mumps virus b. Fox virus c. Measles virus d. Varicella Zoster virus 15 / 30 15) Which of the following statements on Prevotella Intermedia are true:? a. Black pigmented Gram-positive b. Implicated in dental Caries in association with Aggregatibacter actino- mycetemcomitans. c. Implicated in periodontal disease in association with P. gingivalis d. Microaerophilic 16 / 30 16) Fusobacterium Nucleatum 😕 a. Isolated from monomicrobial infections b. Produce proinflammatory cytokines and up-regulating the inflammatory response c. Non capsulate diplococci d. Gram-positive, strictly anaerobic 17 / 30 17) Several infections occur in the oral cavity that are of relevance to the dental team. Which of the following infections does virus cause? a. Acute necrotizing ulcerative gingivitis b. Herpetic stomatitis c. Lateral periodontal abcess d. Pericoronitis 18 / 30 18) Epstein-Barr Virus (EBV)? a. Betaherpesvirus subfamily of herpesviruses b. Achieves latency in sensory ganglia c. Group A infect: skin and mucous membranes d. Cause of infectious mononucleosis 19 / 30 19) Actinobacillus actinomycetemcomitans possesses certain virulence factors that enable it to invade tissues, such as ? a. Streptodornas b. hemolysine c. leukotoxin A d. Hyaluronidase 20 / 30 20) AIDS virus is ? a. RNA virus b. Enterovirus c. Retro virus d. DNA virus 21 / 30 21) Fusobacterium Nucleatum 😕 a. Plays a crucial role in the beginning of periodontal disease b. Black pigmented Gram-negative microorganism c. Implicated in Dental caries d. Cause scarlet fever 22 / 30 22) Mumps virus is belonging to? a. Retroviriae b. Paramyxoviridae c. Orthomyxoviridae d. None of these 23 / 30 23) There are some main routes of infection in oral cavity, which one is inexact? a. Required by transient flora b. Transferred by hands or objects c. Transferred by insects bite. d. Transferred through the air on dust particles or water droplets 24 / 30 24) Certain strains of Streptococcus mutans? a. Are cause of infective meningitides b. Extracellular glucan production. c. Cause dental caries by the production of lactic and other acids, from fermentation of sugars d. Cause of periodontal disease by the production of lactic and acids from fermentation of sugars 25 / 30 25) Acute necrotizing ulcerative gingivitis (ANUG) or trench mouth is caused by a mixed bacterial infection such as? a. Staphylococcus aureus and Streptococcus mutans b. Fusobacterium nucleatum and Streptococcus mutans c. Fusobacterium nucleatum and Spirochetes d. Fusobacterium nucleatum and Actinomyces viscosus 26 / 30 26) Causative agent of scarlet fever? a. Staphylococcus aureus b. Streptococcus pyogens c. Streptococcus viridans d. None of these 27 / 30 27) Toxins or enzymes which are not produced by streptococcus pyogenes? a. Hyaluronides b. Streptokinase c. Phosphate d. Hemolysin 28 / 30 28) 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. Lactobacillus c. Staphylococcus d. Streptococcus 29 / 30 29) Herpagina is usually cause by? a. Group A coxsackieviruses b. Hepatitis A virus c. Group B coxackieviruses d. Cytomegalovirus 30 / 30 30) A patient attends the surgery with bilateral swelling of the parotid salivary glands. Which condition are they suffering from? a. Mumps b. A. Measles c. Rubella d. Poliomyelitis Your score isThe average score is 86% Facebook 0% Restart quiz Any comments? Send feedback
