Beakman explains how plants take up water through the xylem. To demonstrate this, he splits the stem of a white flower in half and puts each half into a different jar of colored water. He also puts a stick of celery in one of the jars. The next day, you can see the white flower is now two different colors and if you split the celery, you can see the xylem because it's now colored.
The group takes a boat ride through the small intestine, where the workers are not only singing about the intestine but are also part of an assembly line that illustrates the small intestine's function: the digestion and absorption of food.
While in the middle of its boat ride, the group encounters the sexually transmitted infection, gonorrhea. Before destroying gonorrhea with a lit match, Poncho alludes to a symptom of the infection: a burning sensation during urination.
Beakman explains how refrigerant inside of a refrigerator works and involves compression and heat absorption. He uses a demo of compressed refrigerant to show that, although it boils when not compressed, it's still cold. He follows up with an animated explaining how the inside of a fridge works.