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- 54. Which vector control mechanism involves individual behaviors and decisions?A. Fumigation of communitiesB. Improving sanitation measures C. Introduction of sterile vectorsD. Using vector repellants 55. Which of the following conditions is classified as a chronic disease?A. ConjunctivitisB. Diabetes mellitus C. MeaslesD. Mumps52. Which vector control mechanism involves community involvement and mobilization?A. Fumigation of communitiesB. Improving sanitation measures C. Introduction of sterile vectorsD. Using vector repellants53. Which vector control mechanism involves passive community involvement?A. Fumigation of communitiesB. Improving sanitation measures C. Introduction of sterile vectorsD. Using vector repellantsIn epidemiology, R0 is the expected number of cases arising from a single infected individual (calculated by the transmission rate/recovery rate). How does successful social distancing reduce the number of covid-19 cases? A. It brings Ro 0 O D. It brings Ro> 1 E. It brings Ro = 1
- A seasonal outbreak of influenza would be an example of what type of outbreak? a. point-source b. common-source c. propagated d. a and b e. a, b, and cWhich of the following is not considered an insect vector?a. flea b. mosquito c. tickd. tsetse flyThe endemic plant Dichanthelium lanuginosum requires the presence of the fungus Curvularia protuberata to survive in hot environments, and the fungus in turn requires the presence of the virus CThhTV. When the fungi is absent, the plant will wilt away in hot soils. This situation involving several species whose effects are not independent of one another is an example of _____ coevolution. A. antagonistic B. specific C. escape-and-radiate D. diffuse
- 1. Some bacteria have the ability to survive heat, lack of moisture, cold or acidic conditions by Forming: a. Parasites b. Vegetative states c. Colonies d. Spores 2. The primary responsibility of food establishment managers in pest control is to ensure: a. Pesticides are applied safely. b. The parking area is kept free of lifter. c. Good sanitation that will eliminate food, water, and harbourage areas. d. The pest control operator they use employs integrated pest management. 3. What are the proper steps in manual and mechanical dishwashing operations after pre- flushing? a. Wash, rinse, sanitize, and air-dry. b. Wash, rinse, sanitize, and towel dry c. Rinse, wash, sanitize, and towel dry. d. Rinse, wash, sanitize, and air dry.The term that best describes the general relationship between 2 organisms in which one benefits and is reliant upon the other organism, however the other is neither harmed nor benefits, is O 1) parasitism. 2) satellitism. 3) synergism. 4) O 4) commensalism. O 5) symbiosis.A bacterium has received new DNA that allows it to produce a toxin. Which of the following statements is true? A. There is a change in both the genotype and phenotype. B. There is a change in the genotype, not the phenotype. C. There is a change in the phenotype, not the genotype. D. There is no change in either the genotype or the phenotype.
- Which of the following is not considered an insect vector? a. fl ea c. tick b. mosquito d. tsetse fl yThink about ticks and Lyme's Disease or Rocky Mountain Spotted Fever. This situation is best described by..... A. mutualism B. exoparasite C. hyperparasitism D. hypergonadism5) Consider the following simulation result: 120 100 80 60 40 20 0 10 20 30 c) When does the epidemic peak? 40 50 Time 60 b) What proportion of the population gets infected? 70 a) What model do you think this simulation result is from? 80 90 d) Suppose 3 = 0.005 and y = 0.1. Calculate Ro for this model. 100 e) Can you stop the epidemic by adding more people to the population? If so, how many people would you need to add?