“Taste receptor cells sensitive to each tastant are present in taste buds across the tongue, meaning that there is no taste ...

There are five basic tastes the tongue can recognise, and for each of them there is a set of receptors that respond to this taste alone, like a set of locks that are opened by specific keys.

A snake uses its forked tongue to pick up scent molecules from the air. When it brings its tongue back in, the molecules contact special receptors and the snake senses the molecules as a smell. A fly ...