TB10 P&C Lecture 2; Olfaction and taste

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  • Created by: mint75
  • Created on: 24-05-16 11:11

1. What is the core concept of shape theory?

  • Receptor specificity is based on molecular structure. Oderants must have the right shape to activate the receptor, there is a certain receptor for each molecule
  • Molecules with the same IR vibrational spectrum should smell similar, same shape diff vibrations smell different. Bond energies determine activation level
  • A two-stage theory. Molecules must be the right shape to bond to receptor sites but bond energies determine final activation level.
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Other questions in this quiz

2. How many distinct chemoreceptors are/basic tastes?

  • 10
  • 5
  • 4
  • 3 but they do not correspond to the basic tastes

3. What is the core concept of vibration theory?

  • Molecules with the same IR vibrational spectrum should smell similar, same shape diff vibrations smell different. Bond energies determine activation level
  • A two-stage theory. Molecules must be the right shape to bond to receptor sites but bond energies determine final activation level.
  • Receptor specificity is based on molecular structure. Oderants must have the right shape to activate the receptor, there is a certain receptor for each molecule

4. Is the McClintock effect well supported?

  • No, original studies were barely significant and accounting for random sync removes effect. No support from large scale long term. Why?
  • Yes, original studies are well replicated in both clinical and natural settings and it is widely accepted knowledge

5. Where do OSN axons project to?

  • Glomeruli in the olfactory cleft
  • Glomeruli in the somatosensory cortex
  • Glomeruli in the olfactory bulb
  • Glomeruli in the olfactory epithelium

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