Perception of sour tastes depends upon _________.
A)a compound interacting with a G protein coupled receptor on the receptor cell surface
B)sodium ions in the food that enter cation channels in the taste receptor plasma membrane,leading to a membrane depolarization
C)protons in the food that enter cation channels in the taste receptor plasma membrane,leading to a membrane depolarization
D)potassium ions in the food that enter cation channels in the taste receptor plasma membrane,leading to a membrane depolarization
E)protons in the food that enter cation channels in the taste receptor plasma membrane,leading to a membrane hyperpolarization

Question

Quizplus · Accepted Answer

The perception of sour tastes depends upon protons (H+) in the food that enter cation channels in the taste receptor plasma membrane, leading to a membrane depolarization. This depolarization activates voltage-gated ion channels and leads to the release of neurotransmitters to relay the signal to the brain. Option A is related to the perception of bitter tastes, while options B, D, and E are not related to the perception of sour tastes.

Perception of Sour Tastes Depends Upon _________