Regarding gustation, which of the following statements is FALSE?
A)Most taste buds are found around the top edges of the tongue with some located elsewhere in the mouth, including under the tongue.
B)As food is chewed, it dissolves and enters the taste buds, where it sets off nerve impulses to the brain.
C)The lock-and-key theory explains the taste sensations of saltiness and sourness.
D)If you plug your nose, small bits of apple, potato, and onion will "taste" almost exactly alike.

Question

Quizplus · Accepted Answer

The lock-and-key theory is primarily used to explain how enzymes function, not taste sensations. Taste sensations, especially for complex flavors, involve a combination of factors including olfactory (smell) inputs. The theory does not specifically explain the taste sensations of saltiness and sourness; these are more directly related to the presence of specific ions (sodium for saltiness, hydrogen ions for sourness) interacting with taste receptors.

Regarding Gustation, Which of the Following Statements Is FALSE