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In this health and genetics activity, learners determine whether tasting the bitter compound PTC (phenylthiocarbamide) influences which vegetables a person likes.

In this activity (1st activity on the page), learners explore their sense of taste and the structure of the tongue by taste-testing various foods.

In this activity, learners examine their tongue and taste buds.

Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.