Two of the five types of taste buds are activated by directly hypopolarizing the taste buds; i. e. do not involve a second-messenger pathway. The tastes that activate these receptors are:

salty and sour

Explanation:

Taste buds consist of the taste receptor cells and they're the nerve endings on the tongue that provide the sense of taste.

Based on the information given, the tastes that activate these receptors are salty and sour. The tastes depolarize the cell receptor directly.

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

explanation: