In order to identify the many smells in the world:
a. humans have a separate receptor for each smell.
b. humans have only one type of receptor which binds to all odorants and then the higher order processing in the brain determines the smell.
c. humans have different receptors that bind to different odorants and the activity patterns created by these bindings are what is interpreted as different smells.
d. humans have two receptor types, one for irritant odors and one for pleasant odors.
Question 2
When an odorant binds to olfactory receptors:
a. a depolarization occurs.
b. sodium channels close.
c. potassium channels open.
d. a hyperpolarization occurs.
Red-Green Color Blindness Is a Sex-Linked Trait in Humans
World Ecosystem
The world has been horrified recently at a U.S. Congress so polarized and paralyzed that it cannot p
Matthew Ritchie, No Sign of the World.
Global Stratification: Income of the World's Nations
Doty's data show a very rapid drop in late adulthood in the ability to identify smells