Olfactory receptor cells
A) contain no receptor molecules.
B) survive for only a few weeks and are replaced by new ones.
C) have no axons.
D) each contain three different receptor molecules.
E) each contain 350 different receptor molecules.
Question 2
Each olfactory receptor cell survives for a few
A) decades.
B) years.
C) months.
D) weeks.
E) days.