1. Digestion Review

2. Why is it important to chew your food before you swallow it?

3. How is food moved along your digestive tract once it is swallowed? Is it a voluntary or involuntary process?

4. What is the main process that occurs during chemical digestion? Hydrolysis or dehydration synthesis?

5. What does the enzyme pepsin digest? Where is it secreted? What must also be present for it to work?

6. Where are pancreatic enzymes secreted? What do they break down?

7. What is the purpose of bile? Where is it secreted from?

8. What happens at the villi? Describe the structure of the villi, and how it relates to its function.

9. What is the main function of your large intestine?

10. What are proteins broken down into during digestion? Where does protein digestion take place?

11. What substances aid in fat digestion? Where does it occur? What are fats broken down into?

12. Where does carbohydrate digestion begin? Where does it end?

13. Why are the bacteria in your large intestine helpful?

14. What is the purpose of the digestive system?

15. What is the difference between intracellular and extracellular digestion? Give an example of an organism that has each type of digestion.

16. What is the function of the crop in the earthworm and grasshopper?

17. What is a major difference between the digestion in the hydra and the earthworm?

18. Describe these digestive system disorders and where they occur: –Ulcer –Heartburn –Diarrhea –Constipation

19. What is the difference between a vitamin and a mineral? What important role do vitamins often have in the body?

20. What is roughage? What foods provide it? Why is it important?

21. What types of foods might contain: –Carbohydrates –Fats –Proteins