442.Which is TRUE about disinfectant solutions:**
A. It destroys all pathogenic micro organism including high resistant
B. It reduces the number of micro organism to a non infective level
C. It kills all pathogens but not spores.
Description : Which is TRUE about disinfectant solutions:** A. It destroys all pathogenic micro organism including high resistant B. It reduces the number of micro organism to a non infective level C. It kills all pathogens but not spores.
Last Answer : B. It reduces the number of micro organism to a non infective level
Description : A patient is resistant to caries but has a periodontal disease. In this case, sucrose in diet is important because: A. Sucrose is greatly involved in plaque development B. S. mutans produces ... with a continual supply of sucrose D. Existing plaque must continue to get sucrose in order to grow
Last Answer : A. Sucrose is greatly involved in plaque development
Description : Which of the following is TRUE in regard to high risk patient?** A. 0.1ml of blood from Hepatitis B carrier is less infective than 0.1ml of blood from HIV patient B. 0.1ml of blood from ... B patient E. The presence of Hepatitis B core Antigen in the blood means that active disease is not present
Last Answer : B carrier is more infective than 0.1ml of blood from HIV patient C. Level of virus are similar in the blood and saliva of HIV patient
Description : A computer virus is (1) a chemical that attacks silicon. (2) a micro-organism that destroys integrated circuits. (3) data that the computer fails to handle. (4) a special kind of computer programme.
Last Answer : a special kind of computer programme.
Description : Clinical indications of pathogenic chronic periodontitis are: A. Mobility B. Dull pain on closing C. Presence of true pocket D. Apical migration of gingival epithelium E. Presence of subgingival calculus F. C, D & E
Last Answer : F. C, D & E
Description : Pathogens (or pathogenic bacterias) in water may cause A. Typhoid B. Cholera C. Dysentery D. All the above
Last Answer : ANS: D
Description : Are Spores harmed by disinfectant heat or cold?
Last Answer : Yes, potentially all 3 could harm spores.
Description : The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)
Last Answer : (A) Chlorine
Description : At birth, the oral cavity usually contains: A. S. mutans only B. No micro organism C. S. mutans and S. salivavis D. Lactobacilli and S. mutans
Last Answer : B. No micro organism
Description : The causative micro organism for Herpetic gingivostomatitis is: A. Herpes simplex bacteria B. Herpes simplex virus C. Herpes zoster virus D. Borrelia vincentii
Last Answer : B. Herpes simplex virus
Description : What is Miller’s theory about A. Acidogenic micro-organism B. Proteolytic
Last Answer : A. Acidogenic micro-organism
Description : Carbon monoxide kills because it destroys a) Haemoglobin b) Phytochrome c) Cytochrome d) Both a and b.
Last Answer : a) Haemoglobin
Description : Which of the following is NOT a significant factor in determining virulence of AA = Actinomyces actinomycetem comitans? A. It effects chemotaxis T B. Produces leukous toxins T C. Destroys collagen t D. It is immuno-suppressive Not significant
Last Answer : D. It is immuno-suppressive Not significant
Description : The formation of _____ by_____ directly lyses and kills pathogens. a. Membrane Attack Complexes, complement b. Inflammation, lymph nodes c. antibodies, plasma cells d. Plasma cells, B cells
Last Answer : a. Membrane Attack Complexes, complement
Description : The Ames test is used to a. Identify Potential Human Carcinogens. b. Discover Auxotrophic Mutants. c. Find Pathogenic Bacterial Species. d. Identify Antibiotic Resistant Mutants.
Last Answer : a. Identify Potential Human Carcinogens.
Description : As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual ... e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.
Last Answer : b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve.
Description : As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising ... root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.
Last Answer : C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling
Description : Peat moss is used as a packing material for sending flowers and live plants to distant places because (a) it serves as a disinfectant (b) it is easily available (c) it is hygroscopic (d) it reduces transpiration.
Last Answer : b) it is easily available
Description : Methicillin resistant staphylococci do not respond to ß-lactam antibiotics because (a) They produce a ß-lactamase which destroys methicillin and related drugs (b) They elaborate an amidase which destroys ... low affinity for ß-lactam antibiotics (d) They are less permeable to ß-lactam antibiotics
Last Answer : Ans: C
Description : Methicillin resistant staphylococci do not respond to β-lactam antibiotics because: A. They produce a β-lactamase which destroys methicillin and related drugs B. They elaborate an amidase which destroys ... low affinity for β-lactam antibiotics D. They are less permeable to β-lactam antibiotics
Last Answer : C. They have acquired penicillin binding protein which has low affinity for β-lactam antibioti
Description : Quality of water is said to be good if it is (A) Free from suspended matter (B) Colourless (C) Free from pathogenic organism (D) All the above
Last Answer : (D) All the above
Description : As far as localised alveolar osteitis is concerned; which one of the following is true? A. The incidence in the mandible and maxilla is similar B. The prophylactic prescription of antibiotics ... and irrigation is mandatory E. Zn oxide eugenol and alvogyl dressing promote a rapid bone growth
Last Answer : C. Excessive fibrinolysis is the likely aetiology
Description : What is true about partial dentures, A. They cause immediate changes in the oral plaque behaviour B. Night wearing of dentures reduces plaque accumulation C. Relieving the gingival area reduces the gingival enlargement.
Last Answer : A. They cause immediate changes in the oral plaque behaviour
Description : As far as localised alveolar osteitis (dry socket) is concerned; which one of the following is true? M07 A. The incidence in the mandible and maxilla is similar B. The prophylactic ... diagnosis and irrigation is mandatory E. Zinc oxide eugenol and alvogyl dressing promote a rapid bone growth
Description : A substance produced by a living organism and capable of antimicrobial activity is called a/an (A) Antibiotic (B) Antiseptic (C) Disinfectant (D) None of these
Last Answer : (A) Antibiotic
Description : The causative organism in localised juvenile periodontitis is Actinomyces actinomycetem comitans which is:** A. Gram positive facultative aerobic B. Gram positive facultative anaerobic non-motile rod C. Gram negative facultative anaerobic non-motile
Last Answer : C. Gram negative facultative anaerobic non-motile
Description : What is an important requisite for fillers in dental composite restorative resins in load bearing areas: A. Sub micro sized particles B. High coefficient of thermal expansion C. High in content (High filler)
Last Answer : C. High in content (High filler)
Description : How will an organism be benefited if it reproduces through spores ? -Biology
Last Answer : An organism is benefited by reproducing through the spores because spores are surrounded by a thick layer which protects them in adverse conditions. When the favourable conditions occur, these spores start to grow again. In this way they are successfully live in unfavourable conditions.
Description : A scientist finds an organism that cannot move. It has many cells,produces spores,and gets food from its environment which kingdom does it belong explain?
Last Answer : Plantae
Description : An organism in the Deuteromycota has all the following except A.asexual spores B.absorptive nutrition C.ascospores, basidiospores or zygospores D.a nucleus
Last Answer : C.ascospores, basidiospores or zygospores
Description : An organism in the Deuteromycota has all the following except A-asexual spores B- absorptive nutrition C- ascospores, basidiospores or zygospores D-a nucleus
Last Answer : ascospores, basidiospores or zygospores
Description : Scientific study of plant Pollen, spores and certain microscopic planktonic organism is called —
Last Answer : Palynology
Description : The saliva pH is approximately 6.8. It is thus a slightly acid pH. Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the ... 's milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.
Last Answer : What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food?
Description : Clavulanic acid is combined with amoxicillin because (a) It kills bacteria that are not killed by-moxicillin (b) It reduces renal clearance of amoxicillin (c) It counteracts the adverse effects of amoxicillin (d) It inhibits beta lactamases that destroy amoxicillin
Last Answer : Ans: D
Description : Patient presents with rapidly progressive root caries on many teeth. Which of the following laboratory results would be a possible indicator of this? A. Stimulated salivary secretion rate of 1.5ml/min B. ... of 105 organism/ml E. Salivary buffering PH 5.5 > 100000 CFU/ml high caries incidence
Last Answer : E. Salivary buffering PH 5.5
Description : The characteristic feature of basal cell carcinoma is: A. Blood metastasis B. Does not erode bone C. Intensive involvement / inveterately characteristic/ D. Radio resistant
Last Answer : C. Intensive involvement / inveterately characteristic/
Description : .The most resistant filling materials to fill class IV cavities are: A. Resins with silicone dioxide (SiO2) B. Resins with glass or quartz C. Silico-phosphate D. Silicates
Last Answer : B. Resins with glass or quartz
Description : The treatment of Localised Juvenile Periodontitis is frequently supplemented with tetracycline because the flora involved is predominant: A. Aerobic B. Strictly anaerobic C. Facultative anaerobic D. Resistant to other antibiotic
Last Answer : C. Facultative anaerobic
Description : Which is true about Trypanosoma? (a) Polymorphic (b) Monogenetic (c) Facultative parasite (d) Non-pathogenic
Last Answer : (a) Polymorphic
Description : Community water fluoridation MOST effectively achieves: a. 90. 95% reduction of caries. b. 45. 55% reduction of caries. Esta se corrects si no tuviera la ultima opcion c. Reduces pit and fissures caries more than smooth surfaces. d. Reduces smooth surfaces more than pit and fissures.
Last Answer : d. Reduces smooth surfaces more than pit and fissures.
Description : What is the most important factor to reduces dental irradiation, A. Speed of film B. Collimation C. Filtration D. Cone shape and length
Last Answer : A. Speed of film
Description : The advantage of firing porcelain in vacuum:** A. Reduces size of air-bubbles incorporated thus decreasing porosity B. Removes water before firing, increasing the hardness of porcelain C. Significantly lowers firing temperature
Last Answer : A. Reduces size of air-bubbles incorporated thus decreasing porosity
Description : By which of the following mechanism reduces Aspirin pain: A. It is anti inflammatory by the release of histamine B. It blocks the cyclo-oxygenase pathway.
Last Answer : B. It blocks the cyclo-oxygenase pathway.
Description : Community water fluoridation MOST effectively achieves is:** A. 90-95% reduction of caries B. 45-55% reduction of caries C. Reduces pit and fissures caries more than smooth surfaces D. Reduces smooth surfaces more than pit and fissures
Last Answer : D. Reduces smooth surfaces more than pit and fissures
Description : Treatment of Osteoradionecrosis is: A. Antibiotic coverage B. Conservative treatment including antibiotic coverage and resection of jaw segment. C. Conservative treatment with sequestrectomy
Last Answer : C. Conservative treatment with sequestrectomy
Description : Which one of the following is most appropriately defined? (a) Host is an organism which provides food to another organism. (b) Amensalism is a relationship in which one species is benefitted ... Parasite is an organism which always lives inside the body of other organism and may kill it.
Last Answer : (c) Predator is an organism that catches and kills other organism for food.
Description : Though penicillin G kills the causative organism, it is only of adjuvant value to other measures in: A. Diphtheria B. Subacute bacterial endocarditis C. Syphilis D. Anthrax
Last Answer : A. Diphtheria
Description : Which micro-organisms in periapical lesion would you find microscopically: A. Aerobes B. Aerobes to mainly anaerobes
Last Answer : B. Aerobes to mainly anaerobes