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Olfaction: Quiz

  
  
  
  

Question 1: In mammals the odorants stimulate adenylate cyclase to synthesize cAMP via a ________ called Golf.
Plasma membrane Ca2+ ATPaseG proteinGTPaseRas (protein)

Question 2: The MHC genes (known as HLA in humans) are a group of genes present in many animals and important for the ________; in general, offspring from parents with differing MHC genes have a stronger immune system.
Lymphatic systemToll-like receptorAdaptive immune systemImmune system

Question 3: Many air management districts in the ________ have numerical standards of acceptability for the intensity of odor that is allowed to cross into a residential property.
CanadaAlaskaPhilippinesUnited States

Question 4: Inputs from the two nostrils have separate inputs to the brain with the result that it is possible for humans to experience perceptual rivalry in the olfactory sense akin to that of ________ when there are two different inputs into the two nostrils.
Multistable perceptionColorBinocular rivalryStereopsis

Question 5: Many animals, including most mammals and reptiles, have two distinct and segregated olfactory systems: a main olfactory system, which detects volatile stimuli, and an ________, which detects fluid-phase stimuli.
Olfactory receptor neuronOlfactory receptorSensory systemOlfaction

Question 6: An alternative theory, the vibration theory proposed by ________[5][6], posits that odor receptors detect the frequencies of vibrations of odor molecules in the infrared range by electron tunnelling.
BiophysicsLondonLuca TurinNature (journal)

Question 7: The Ca2+ in turn opens a Ca2+-activated chloride channel, leading to efflux of Cl-, further depolarising the cell and triggering an ________.
Action potentialPhotoreceptor cellIon channelNeuron

Question 8: This is possibly due to the olfactory system's close anatomical ties to the limbic system and ________, areas of the brain that have long been known to be involved in emotion and place memory, respectively.
Dentate gyrusCingulate gyrusCerebrumHippocampus

Question 9: In the ________, stimuli are detected by the vomeronasal organ, located in the vomer, between the nose and the mouth.
Olfactory receptorOlfactionSensory systemOlfactory receptor neuron

Question 10: In ________ smells are sensed by olfactory sensory neurons in the olfactory epithelium.
ChordateVertebrateTunicateArthropod
















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