Which statement is TRUE regarding the sense of smell?
A) Humans have the ability to detect a maximum of about 500 different scents.
B) Humans can identify by name a maximum of about 300 different scents.
C) We smell something when odor molecules in the air get inhaled into the nose.
D) We smell something when chemicals in the air interact with chemicals given off by the nose.

Question

Quizplus · Accepted Answer

When odor molecules in the air get into the nose, they stimulate receptors in the nasal cavity, which sends signals to the brain, allowing us to detect and interpret different scents. Therefore, option C is true. On the other hand, options A and B relate to the number of scents that humans can detect and identify, respectively, which is very subjective and may vary from person to person. Option D is incorrect.

Which Statement Is TRUE Regarding the Sense of Smell