5. How does skin keep germs from getting in your body? (1 point) Cells have many layers to protect us. 6. How do the students enter the lower layers of Arnold’s and Pheobe’s skin? (1 point)

7. Your body is made of living cells that and . (2 points)

8. In which organ do the students discover that Sea Weedies are actually orange in color? (1 point)

9. The is the organ that absorbs all the good things and nutrients from the food we wat, and transports it to the blood stream. (1 point)

10. The , also made of cells, move food into the . (1 point)

11. What are some of the different types of body cells that Ms. Frizzle lists (at least 3)? (3 points)

12. As Ms. Frizzle says, “We are what we !” What does she mean by this phrase? (2 points)

13. Roughly how long would it take for new skin cells to regenerate and grow from the bottom layers, then reach the surface of the skin? (1 point)