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Unit 19: Biology Part 2 Page 111 of 137

In the “sour” cup, place lemon juice or lemonade. In the “bitter” cup,
place unsweetened iced coffee.
2. Dip a q-tip into the sweet cup. Place a drop of the sweet liquid on the
tip of your tongue. Dip it in again, and place it on the side of your
tongue towards the front. Place another drop on the side towards the
back, and a final drop in the back. Record where you tasted the
sweetness most strongly.
3. With a different q-tip, repeat step two for the other cups.

What’s Happening: Look at the diagram below, which shows where the
concentration of taste buds for each of these tastes are. How closely do
your results match the diagram? If your results seem a little off, don’t
worry. You actually have taste buds for all kinds of tastes everywhere. The
map just shows where they are the strongest.

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