Where are the salty taste buds located on the tongue?

The taste buds for sweet are on the tip of the tongue; the salt taste buds are on either side of the front of the tongue; sour taste buds are behind this; and bitter taste buds are way in the back.

Explanation:

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

digestion

it excretes wastes