What is Sweetness?

According to PubMed Health, the sense of taste is caused by the chemicals in food coming in contact with sensory cells. When they come in contact, certain proteins in the food activate the nerves and transfer the exact taste to our brains through nerves. The taste buds on our tongues contain all of these sensory cells, and because they are bumpy, they increase the surface area of the tongue letting us taste even more. Many people were taught that the different parts of the tongue taste different things like sweetness, saltiness and bitterness but that is false, all parts of our tongue taste everything.