Question

Alkaloids excite gustatory hairs mostly at the ________?

1) tip
2) base
3) middle
4) root

Answer 1

Alkaloids excite gustatory hairs mostly at the tip of the taste buds on the tongue.

Step-by-step explanation:

The gustatory hairs, or taste receptors, are mostly excited at the tip of the taste buds on the tongue. These hair-like extensions protrude into the central pore of the taste bud and contain specialized gustatory receptor cells. When alkaloids, which are chemically basic substances that stimulate bitter receptors, bind to the taste receptors at the tip, they cause chemical changes within the sensory cell and generate neural impulses that are transmitted to the brain.