However, the receptor-independent process involves the diffusion of bitter, amphiphilic chemicals like quinine across the taste receptor cell membranes.

An acoustic stimulus produces a simultaneous change in conductance at the membrane of the receptor cell.

A receptor cell converts the energy in a stimulus into a change in the electrical potential across its membrane.

As the cells were examined in detail, certain features were distinguishable for each type of receptor cell.

Species with different numbers of receptor cell types would have color vision requiring a different number of primaries.