Late one night, while studying for your anatomy class, you open a box of saltine crackers to do a little snacking. After chewing on a starchy morsel for a few minutes, you begin to notice a sweet taste in your mouth. What accounts for this?
A. Activity of bacteria in the mouth lowers the pH.
B. Phagocytosis by the pharyngeal tonsils produces by-products that taste sweet.
C. "Sweet" taste receptors are slower to respond than others.
D. Salivary amylase activity
E. Esophageal reflux
Answer: D
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