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Pyrethroid: Quiz

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Question 1: In the concentrations used in such products, they may also have ________ properties and are generally harmless to human beings in low doses but can harm sensitive individuals.
Insect repellentEssential oilBasilDEET

Question 2: The chemical causes paralysis by keeping the ________ open in the neuronal membranes of an organism.
Stretch-activated ion channelPotassium channelSodium channelIon channel

Question 3: A pyrethroid is a synthetic ________ similar to the natural chemical pyrethrins produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum).
ElectrochemistryInorganic chemistryChemistryChemical compound

Question 4: [1] They are usually broken apart by sunlight and the atmosphere in one or two days, and do not significantly affect ________ quality.
GroundwaterHydrogeologyRiverAquifer

Question 5: At extremely small levels, such as 2 parts per trillion,[3] pyrethroids are lethal to mayflies, gadflies, and invertebrates that constitute the base of many aquatic and terrestrial ________.
Food chainPredationHerbivoreCarnivore

Question 6: cyphenothrin, active ingredient of K2000 Insect spray sold in ________ and the Palestinian territories
IsraelArmeniaGreeceUnited States

Question 7: Pyrethroids are usually combined with piperonyl butoxide, a known inhibitor of key microsomal oxidase ________.
EnzymeCofactor (biochemistry)ProteinEnzyme inhibitor

Question 8: Pyrethroids are ________ poisons and cause paralysis of an organism.
NeuronNervous systemSchwann cellAxon

Question 9: Pyrethroids now constitute a major proportion of the synthetic insecticide market and are common in commercial products such as household ________.
OrganophosphateMalathionInsecticidePesticide







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